Journal of Macromolecular Science Part A-Pure and Applied Chemistry最新文献

{"title":"Recent advances in flame retardant polymers via thiol-ene click chemistry","authors":"Emrah Çakmakçı","doi":"10.1080/10601325.2023.2280237","DOIUrl":"https://doi.org/10.1080/10601325.2023.2280237","url":null,"abstract":"AbstractWithin the toolbox of click chemistry, the utilization of thiol-ene reactions for polymer synthesis and modification is a current area of intense attention. Thiol-ene click reactions are used for a broad range of applications. One main area that needs particular attention, where thiol-ene click reactions are immensely employed, is the fabrication of coatings. Especially, when light is used to trigger the thiol-ene reactions, coatings can be prepared within seconds. This method is known as thiol-ene photopolymerization (TEP) and it is a marvelous advancement among light-induced crosslinking systems. TEP is a powerful tool for the preparation of coatings. The synthesis of phosphorous monomers for TEP has prominent importance for improved thermal properties and flame retardancy. Here, the existing literature on flame retardant TEP systems and reactive phosphorous monomers used in TEP are summarized. This review mainly highlights the studies on thermosets yet some linear polymer examples are also included. While this mini-review focuses mostly on TEP, relevant works involving other thiol-ene polymerization routes (i.e. thermal thiol-ene polymerization) rather than photopolymerization are presented. Finally, studies that utilize thiol-ene click reactions to synthesize phosphorous monomers and flame retardants are also given.Keywords: Thiol-ene clickthiol-ene photopolymerizationflame retardantphosphorusnitrogen AcknowledgmentsThis paper is dedicated to the memory of Prof. Atilla GÜNGÖR. The author would like to thank all colleagues and group members who have contributed over the years.Disclosure StatementThe author declares no conflict of interest.","PeriodicalId":50159,"journal":{"name":"Journal of Macromolecular Science Part A-Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135092074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determination of HOMO and LUMO of bis( <i>β</i> -diketonate)zirconium(IV) compound used as a catalyst in the ring opening polymerization of <i>ε</i> -Caprolactone and <i>δ</i> -Valerolactone","authors":"Muhammad Yusuf, None Nurfajriani, Rahmayani Siregar, None Eddiyanto, Asep W. Nugraha","doi":"10.1080/10601325.2023.2273842","DOIUrl":"https://doi.org/10.1080/10601325.2023.2273842","url":null,"abstract":"AbstractPoly(ε-caprolactone) (PCL) and poly(δ-valerolactone) (PVL) are aliphatic polyesters that can generally be used for basic medical materials such as bone and dental implant materials, drug delivery systems, and scaffolds in tissue engineering. PCL and PVL belong to the polylactone group which have superior properties such as good biocompatibility, nontoxicity, flexibility, thermoplastic and can be biodegraded in a controlled manner. These superior properties make it the main choice in producing medical materials. This study aims to determine the degree of polymerization of PCL and PVL catalyzed using a bis(β-diketonate)zirconium(IV) complex. In addition, analysis of the Highest Occupied Molecular Orbital (HOMO) and Lowest Unoccupied Molecular Orbital (LUMO) was also carried out on the catalyst complex. The ring-opening polymerization reaction (ROP) of ε-caprolactone (ε-CL) and δ-valerolactone (δ-VL) lasted for 4 h at 100 °C. The resulting PCL and PVL were then characterized for their chemical and thermal properties using FTIR, 1HNMR, XRD, DTA and TGA. Both PCL and PVL are semicrystalline. On the other hand, the resulting PCL has a melting point of 65.5 °C, with a degree of polymerization (DP) of 17. Meanwhile, the resulting PVL has a melting point of 63.4 °C with a DP of 8.Keywords: Bis(β-diketonate)zirconium(IV)poly(ε-caprolactone)poly(δ-valerolactone)ring-opening polymerization reactionsand implants Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingWe are grateful for the financial support provided by Hibah Penelitian Fundamental Reguler DRTPM DIKTI RI (No. 012/UN33.8/DRTPM/PL/2023).","PeriodicalId":50159,"journal":{"name":"Journal of Macromolecular Science Part A-Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136311720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanohybrid materials using gold nanoparticles and RAFT-synthesized polymers for biomedical applications","authors":"Mahua Dhara (Ganguly)","doi":"10.1080/10601325.2023.2271040","DOIUrl":"https://doi.org/10.1080/10601325.2023.2271040","url":null,"abstract":"","PeriodicalId":50159,"journal":{"name":"Journal of Macromolecular Science Part A-Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134908099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Emerging trends in olefin polymerization: a perspective","authors":"Rajkumar S. Birajdar, Dnyaneshwar Bodkhe, Poonam Gupta, Maulali H. Shaikh, Rohan Ramekar, Samir H. Chikkali","doi":"10.1080/10601325.2023.2269971","DOIUrl":"https://doi.org/10.1080/10601325.2023.2269971","url":null,"abstract":"AbstractThe seemingly matured field of olefin polymerization still poses several challenges and holds enormous potential to meet contemporary material requirements. In this feature article, we examine the progress of olefin polymerization in the last two decades. Among the several emerging trends, we identify four most impactful discoveries, namely, (i) disentangled ultra-high molecular weight polyethylene (dUHMWPE), (ii) disubstituted functional olefin copolymerization, (iii) incorporation of bioderived comonomers in polyolefins, and (iv) application of above (ii, iii) functional polyolefins as compatibilizers. The dUHMWPE has attracted significant attention and heterogeneous Ziegler-type catalysts, homogenous metallocene, and post-metallocene catalysts have been reported to produce disentangled ultrahigh molecular weight polyethylene. Insertion copolymerization of difunctional disubstituted olefins has been reported only recently and ortho-phosphinobenzene sulfonate palladium catalyst outperforms the other catalysts. Interestingly, insertion copolymerization of bioderived olefins has witnessed a surge in the number of reports. Sugar and plant oil-derived olefins have been copolymerized with ethylene to obtain relatively hydrophilic polyethylene. The functional polyethylene is finding a new application as compatibilizer or displays better adhesion to surfaces. Thus, the feature article offers a succinct account of emerging trends in polyolefins, identifies the most impactful contributions, and debates the application potential of these new materials.Keywords: Insertion (co)polymerizationuHMWPEfunctional polyethylenerenewable monomerscompatibilizer Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingWe gratefully acknowledge the financial support from DST-SERB (CRG/2021/005385), CSIR-NCL (HCP46), and DSIR (CRTDH@NCL) India. RSB is thankful to DST for the DST-INSPIRE fellowship. DVB and PG are thankful to UGC for the fellowship.","PeriodicalId":50159,"journal":{"name":"Journal of Macromolecular Science Part A-Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135462944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A hyaluronic-based prodrug with aggregation-induced emission for drug delivery and cellular imaging","authors":"Hoang-Phuc Pham, Vijayakameswara Rao Neralla","doi":"10.1080/10601325.2023.2265961","DOIUrl":"https://doi.org/10.1080/10601325.2023.2265961","url":null,"abstract":"AbstractA novel drug molecule (R6) is conjugated to hyaluronic acid (HA) to form a pH-responsive prodrug with aggregation-induced emission (AIE) property. Owing to its amphiphilic nature, the prodrug could self-assemble into nanoparticles (NP) in an aqueous solution. This formulation thereby gave rise to AIE of the R6 moieties which resided in the NP core. The polymer could release the drug at the tumor microenvironment (TME) acidic condition (99% release after 72 h), while remaining stable at the physiological pH. In addition, fluorescence signals by AIE from the NP could be used for cellular imaging. The hyaluronic acid shell can target the overexpressed CD44 receptors in cancer cells, which gives the NP active targeting property. The prodrug showed toxicity against the mouse breast cancer cell line 4T1 while being harmless to the L929 fibroblast cells. Fluorescence microscopy images confirmed the imaging ability of the NP in 4T1 cells. The HA-R6 polymer prodrug promises to be a versatile pH-sensitive drug delivery platform.Keywords: Hyaluronic acidprodrugdrug deliveryaggregation-induced emissionimaging AcknowledgmentsWe would like to express their gratitude to National Taiwan University of Science and Technology (NTUST) and the Department of Chemical Engineering for their support to this project. For the chemical characterization and cell studies, Taiwan Ministry of Science and Technology funding (NSTC 111-2221-E-011-025) was used. Hyluronic acid was purchased from the NSTC 109-2222-E-011-004 grant.Disclosure statementThe authors declare no competing financial interest.","PeriodicalId":50159,"journal":{"name":"Journal of Macromolecular Science Part A-Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136353579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of cross-linking system and reinforcement on the cross-linking reaction of peroxide vulcanized ethylene-propylene-diene terpolymer (EPDM) matrix","authors":"Panayiotis Ketikis, Ioannis Ketikis, Petroula A. Tarantili","doi":"10.1080/10601325.2023.2265974","DOIUrl":"https://doi.org/10.1080/10601325.2023.2265974","url":null,"abstract":"AbstractIn this work, the effect of using of dicumyl-peroxide (DCP) (2, 5 & 8 phr) and co-agent triallyl-cyanurate (TAC) (2, 4 & 6 phr) as cross-linking system as well as multi-walled carbon nanotubes (MWCNTs) (5, 8 και 10 phr) as a filler, for ethylene-propylene-diene terpolymer (EPDM) was investigated. Differential scanning calorimetry (DSC) was employed in order to study the progress of the cross-linking reaction, based on the exothermic vulcanization peaks of isothermal (at 160, 170, 180, 190 °C) and non-isothermal experiments (with heating rates 5, 10, 25, 50 °C min−1). The autocatalytic model was successfully applied to the results of isothermal experiments and the activation energy (Ea) of the reaction was calculated, based on the Arrhenius equation. The Ozawa-Kissinger equations were also applied to the data obtained from the non-isothermal study. From the results obtained from isothermal DSC experiments, an increase was observed in the reaction rates accompanied with a decrease in Ea with the increase of DCP content, whereas a proportional relationship between TAC content and the enthalpy and Ea of the reaction was recorded. The incorporation of MWCNT’s in EPDM increased its Ea. From the non-isothermal DSC experiments, a significant increase in the enthalpy and Ea of the cross-linking reaction was observed at higher DCP content, whereas TAC content did not show any notable effect on the reaction. Based on the results of this research, it is concluded that the increase of peroxide content facilitates the vulcanization of EPDM, whereas inhibition was observed by the incorporation of MWCNT’s.Keywords: EPDM elastomerperoxideco-agentcarbon nanotubesvulcanizationdifferential scanning calorimetry AcknowledgmentsSpecial thanks go to Dr. Dimitrios Korres for his assistance in DSC experiments.Disclosure statementNo potential conflict of interest was reported by the authors.","PeriodicalId":50159,"journal":{"name":"Journal of Macromolecular Science Part A-Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135093648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Norbornenyl-pendant aromatic (co)poly(ether ether ketone)s","authors":"Aniket A. Talanikar, Samadhan S. Nagane, Prakash P. Wadgaonkar, Gajanan S. Rashinkar","doi":"10.1080/10601325.2023.2261462","DOIUrl":"https://doi.org/10.1080/10601325.2023.2261462","url":null,"abstract":"Abstract4, 4'-(Bicyclo (2.2.1) hept-5-en-2 yl methylene) bis (2-methoxyphenol) (BPA-NB) was utilized as a step-growth monomer for the synthesis of (co)poly(ether ether ketone)s (PEEK-NBs) via nucleophilic aromatic substitution polycondensation. A homo and five PEEK-NBs were synthesized by polycondensation of 4, 4'-difluorobenzophenone with BPA-NB and various compositions of BPA-NB and bisphenol-A, respectively. 1H NMR spectroscopy confirmed the chemical structure and composition of PEEK-NBs. Inherent viscosity and number-average molecular weight values of PEEK-NBs were in the range 0.64 to 0.78 dL g−1 and 62,670 to 84,470 g mol−1, respectively, indicating the formation of polymers of reasonably high molecular weight. It was easy to dissolve PEEK-NBs in common organic solvents such as chloroform, dichloromethane, and tetrahydrofuran. Tough, transparent, and flexible films of PEEK-NBs could be cast from chloroform solution. X-Ray diffraction studies indicated amorphous nature of PEEK-NBs. Glass transition temperature (Tg) values, determined by DSC analysis, of PEEK-NBs were in the range 163 to190 °C and Tg values increased with the increase in mol % of BPA-NB. The post-polymerization modification of a representative PEEK-NB was demonstrated using two azido compounds, namely, 4-(azidomethyl)-7-methoxy-2H-chromen-2-one and 9-(azidomethyl)anthracene, via metal-free azide-alkene 1,3-dipolar cycloaddition reaction to obtain copoly(ether ether ketone)s appended with coumarinyl and anthracenyl moieties, respectively.Keywords: (Co)poly(ether ether ketone)snorbornenyl groupspost-polymerization modificationazide-alkene click reaction AcknowledgementsAuthors are grateful to Dr. P. R. Rajamohanan for help with interpretation of NMR data.Disclosure statementNo potential conflict of interest was reported by the author(s).","PeriodicalId":50159,"journal":{"name":"Journal of Macromolecular Science Part A-Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135481277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanomolar detection of hypochlorite in ground water samples by a norbornene-based polymeric sensor via unusual fluorescence turn-on response","authors":"Jyotirlata Singha, Narayan Das, Raja Shunmugam","doi":"10.1080/10601325.2023.2257767","DOIUrl":"https://doi.org/10.1080/10601325.2023.2257767","url":null,"abstract":"AbstractHypochlorite anion has been widely used as a bleaching and disinfecting agent in daily life. Selective and sensitive identification ofOCl-ions from water is very important for researchers. For this purpose, monomeric (NPh), and polymeric (PNPh-Peg) novel fluorescent sensors have been established for the specific and excellently unique sensors that exhibit selective characteristics like excellent resistance to bleaching and a high fluorescence brightness. A multi-functional random polymer (PNPh-Peg) with ICT (intramolecular charge transfer) active para–amino phenol functionality and reactive oxygen species (ROS) responsive, PEG attached are readily prepared via ROMP (ring-opening metathesis polymerization).: An ICT-active random polymer (PNPh-Peg) exhibited an unexpectedly strong cyan blue emission in a water medium compared to that in other common organic solvents, which was dramatically increased by adding a trace amount of NaOCl.: Incorporating PEG moiety in the polymeric backbone increases the water solubility of a copolymer, and the ROS-responsive groups make the polymer a good ROS scavenger. Upon oxidation of the phenol group into carbonyl, both the monomeric (NPh) and polymeric (Norp-PEG oh) sensors showed a selective, noticeable, unusual fluorescence turn-on response towardsanalyteOCl-ions with a very fast response (within three minutes). The detection limit (59.14 nM) and (126.93 nM) were calculated for monomeric and polymeric sensors, respectively. This was a selective, specific oxidation reaction of the completely water-soluble random polymeric sensor (PNPh-Peg) for hypochlorite anions and can be applicable for quantitative measurement of aqueous OCl-. This ICT-active random polymeric molecule (PNPh-Peg) can also be used as a fluorescent sensor for unique OCl- detection from contaminated water by preparing a sensor-coated paper strip. Thus, these multi-functional monomeric (NPh) and polymeric (PNPh-Peg) sensors are anticipated to apply to the environment.Keywords: Bio-imagingbleaching propertyhygroscopicmulti-functionalpolymeric sensor AcknowledgmentsJ. S. thanks DBT for a research fellowship. R. S. thanks IISER-K, DBT, DST, and DRDO for funding. The authors thank IISER-K for the use of infrastructure and facilities.Authors’ contributionsJ.S. did all the reactions and wrote the manuscript. N.D. helps to do the reactions and write the manuscript. R.S. supervised every step of this project.Disclosure statementNo potential conflict of interest was reported by the author(s).","PeriodicalId":50159,"journal":{"name":"Journal of Macromolecular Science Part A-Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136062114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication of dense anion exchange membranes by filling polymer matrix into quaternized branched polyethyleneimine @cellulose aerogel through in-situ polymerization","authors":"Wenting Lan, Dawei Dong, Minghua Zhang, Yafei Xiao, Zhixin Zhao, Zhaojie Yang, Ya Cao, Minmin Fan","doi":"10.1080/10601325.2023.2257758","DOIUrl":"https://doi.org/10.1080/10601325.2023.2257758","url":null,"abstract":"AbstractIn order to construct interconnected three-dimensional ion transport structures within anion exchange membranes (AEMs), we proposed the idea of preparing AEMs by filling the aerogel three-dimensional network skeleton by in-situ polymerization. First, quaternized branched polyethyleneimine (QBPEI) with a large number of quaternary ammonium groups was cross-linked with cellulose to construct an aerogel with a three-dimensional network. Then, poly(4-vinylbenzyl chloride) (PVBC) was filled into the aerogel network through in-situ polymerization. Finally, dense AEMs with internal three-dimensional ion transport networks were prepared by hot pressing PVBC/QBPEI@cellulose. The prepared AEMs have low ion exchange capacity (IEC) values and high ionic conductivities, with the membrane with the best overall performance (IEC value of 1.58 meq./g) having a maximum hydroxide conductivity of 38.88 mS/cm at 80 °C. In addition, the optimized membrane has good chemical and dimensional stability, and the maximum power density of the fuel cell assembled based on it is 46.32 mW/cm2. Although the performance of the prepared composite membranes needs to be further improved due to the preparation process, the design idea in this work provides a feasible solution for the construction of continuous ion fast transport channels in AEMs.Keywords: anion exchange membranequaternized branched polyethyleneiminecellulose aerogelhot pressingpoly(4-vinylbenzyl chloride) Associated contentSupporting information is available free of charge.Author contributionsWenting Lan: Data curation, Writing- Original draft preparation; Dawei Dong: Writing- Reviewing and Editing; Minghua Zhang: Methodology and Software; Yafei Xiao: Conceptualization and Methodology; Zhixin Zhao: Visualization, Investigation; Zhaojie Yang: Software and Validation; Ya Cao: Supervision and Data curation; Minmin Fan: Writing- Reviewing and Editing.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was financially supported by the National Natural Science Foundation of China [No. 51803136], Sichuan Science and Technology Program [No. 2021YFG0245] and the Fundamental Research Funds for the Central Universities [No. 2022SCUH0001].","PeriodicalId":50159,"journal":{"name":"Journal of Macromolecular Science Part A-Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136060769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diethylaluminum chloride-co-initiated cationic polymerization of isoprene: dramatic effect of the nature of alkyl halide on the properties of synthesized polymers","authors":"Victor A. Rozentsvet, Daria M. Ulyanova, Nelly A. Sablina, Sergei V. Kostjuk, Nina V. Sidorenko, Peter M. Tolstoy","doi":"10.1080/10601325.2023.2257739","DOIUrl":"https://doi.org/10.1080/10601325.2023.2257739","url":null,"abstract":"AbstractThe cationic polymerization of isoprene using alkyl halide/Et2AlCl initiating system (alkyl halide: tert-butyl chloride, tert-butyl bromide, 2-chloro-2-methylbutane and isopropyl chloride) at different temperatures has been studied. It was shown for the first time that using of tertiary alkyl halide in conjunction with Et2AlCl allowed to synthesize fully soluble solid thermoplastic polymers with reduced unsaturation (41–48 mol%) as well as relatively high glass transition temperature (52–60°С) and softening point (102–128°С). The substitution of tertiary alkyl halides on the secondary one (isopropyl chloride) results in the obtaining of cross-linked polymers due to the low activity of isopropyl chloride in chain transfer to alkyl halide. It was found that alkyl halide nature, the ratio of alkyl halide to Et2AlCl, duration and temperature of the polymerization of isoprene have dramatic effect on the unsaturation of synthesized polymers as well as their molecular weight, polydispersity, physical and chemical properties.Keywords: Alkyl halidescationic polymerizationdiethylaluminum chlorideisoprenesolid thermoplastic polymers Disclosure statementThe authors declare no conflict of interest.Author contributionsVictor A. Rozentsvet: Conceptualization, supervision, methodology, project administration, resources, writing-original draft, writing-review and editing. Daria M. Ulyanova: Investigation, formal analysis, data curation. Nelly A. Sablina: Investigation, data curation, software, visualization. Sergei V. Kostjuk: Formal analysis, writing-original draft, writing-review and editing. Nina V. Sidorenko: Investigation. Peter M. Tolstoy: Investigation, methodology, formal analysis.Additional informationFundingThe work was performed on the theme of research No. 1021060107217-0-1.6.19 of Samara Federal Research Scientific Center of Russian Academy of Science, Institute of Ecology of Volga River Basin of Russian Academy of Science and State Task of the Russian Federation No. АААА-А19-119091190094. This work is also partially supported by State Program for Scientific Research of Belarus “Chemical processes, reagents and technologies, bioregulators and bioorganic chemistry” (project 2.1.01.03).","PeriodicalId":50159,"journal":{"name":"Journal of Macromolecular Science Part A-Pure and Applied Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136060897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}