Pub Date : 2024-07-17DOI: 10.1134/S0965545X24600571
A. S. Semkina, I. V. Bakeeva, N. M. Kuznetsov, A. E. Krupnin, T. E. Grigoriev, S. Chvalun
{"title":"Mechanical Properties of Poly(vinyl alcohol) Hydrogels: Role of Chemical Crosslinks and Physical Junctions","authors":"A. S. Semkina, I. V. Bakeeva, N. M. Kuznetsov, A. E. Krupnin, T. E. Grigoriev, S. Chvalun","doi":"10.1134/S0965545X24600571","DOIUrl":"https://doi.org/10.1134/S0965545X24600571","url":null,"abstract":"","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141639966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-17DOI: 10.1134/S0965545X2460056X
Shuzeng Hou, Lu Ye, Changning Ran, Tiantian Yan, Hongwei Li, Jianjun Zhang
{"title":"Dielectric and Energy Storage Properties of BaTiO_3/PVDF Composite Films Fabricated by a Spin-coating Process","authors":"Shuzeng Hou, Lu Ye, Changning Ran, Tiantian Yan, Hongwei Li, Jianjun Zhang","doi":"10.1134/S0965545X2460056X","DOIUrl":"https://doi.org/10.1134/S0965545X2460056X","url":null,"abstract":"","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141639804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-17DOI: 10.1134/S0965545X23600485
Nguyen Chi Thanh, Nguyen Bui Anh Duy, Ho Thi Hong Xuyen, Nguyen Thanh Huy, Bui Phuong Dong, Tong Quynh Giang
{"title":"Environmentally Friendly Bioplastic Films Based on Avocado Seeds Starch and Nanocellulose Fibers","authors":"Nguyen Chi Thanh, Nguyen Bui Anh Duy, Ho Thi Hong Xuyen, Nguyen Thanh Huy, Bui Phuong Dong, Tong Quynh Giang","doi":"10.1134/S0965545X23600485","DOIUrl":"https://doi.org/10.1134/S0965545X23600485","url":null,"abstract":"","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141640105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-12DOI: 10.1134/s0965545x24600479
M. S. Leonovich, V. A. Korzhikov-Vlakh, E. G. Korzhikova-Vlakh, I. A. Gur’yanov, O. N. Brevnov, T. B. Tennikova
Abstract
A series of molecularly imprinted and nonimprinted cryogels based on the copolymer of 2‑hydroxyethyl methacrylate and N,N '-methylene-bis(acrylamide) are synthesized at various ratios and contents of comonomers in the polymerization mixture. The resulting materials are characterized in terms of surface morphology, swelling ability, average pore size, porosity, and compression mechanical characteristics. In addition, a comparative assessment of the adsorption properties of the molecularly imprinted and nonimprinted cryogels with respect to a target protein (α-chymotrypsin) in the dynamic mode is performed, as well as the in vitro biocompatibility of the cryogels using two cell lines.
{"title":"Biocompatible Molecularly Imprinted Cryogel Matrices for Protein Recognition in Biological Samples","authors":"M. S. Leonovich, V. A. Korzhikov-Vlakh, E. G. Korzhikova-Vlakh, I. A. Gur’yanov, O. N. Brevnov, T. B. Tennikova","doi":"10.1134/s0965545x24600479","DOIUrl":"https://doi.org/10.1134/s0965545x24600479","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A series of molecularly imprinted and nonimprinted cryogels based on the copolymer of 2‑hydroxyethyl methacrylate and <i>N</i>,<i>N</i> '-methylene-bis(acrylamide) are synthesized at various ratios and contents of comonomers in the polymerization mixture. The resulting materials are characterized in terms of surface morphology, swelling ability, average pore size, porosity, and compression mechanical characteristics. In addition, a comparative assessment of the adsorption properties of the molecularly imprinted and nonimprinted cryogels with respect to a target protein (α-chymotrypsin) in the dynamic mode is performed, as well as the in vitro biocompatibility of the cryogels using two cell lines.</p>","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":null,"pages":null},"PeriodicalIF":1.206,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141609109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-12DOI: 10.1134/s0965545x23600400
Yunfang Long, Yi Zhang, He Zhao, Yuhan Xing, Jianhua Zhang
Abstract
Resin mineral composites (RMC) have attracted a great deal of attention in ultra-precision machining because of their excellent vibration-dampening properties; however, their poor mechanical properties limit their wide applications. Adding reinforcing fibers is an effective way to improve the mechanical properties of RMC. This paper systematically studies the effect of aramid fibers as reinforcing components on the mechanical and thermal expansion properties of RMC. Results show that the mechanical strength of RMC can be effectively improved by a suitable selection of surface treatment methods and parameters. The mechanical strength of RMC reached its maximum value when the ultrasonic power was 200 W and the treatment time was 6 min; the mechanical strength of RMC reached its maximum value when the concentration of phosphoric acid oxidation was 20 wt % and the treatment time was 2 h. This study investigates the effect of different surface treatments on aramid fibers on the mechanical properties of resin mineral composites, optimizes the aramid fiber surface treatment parameters, enhances the mechanical properties of resin mineral composites, and extends the applications of resin mineral composites in high-speed processing and ultra-precision processing.
{"title":"Mechanical Properties of Aramid Fiber Reinforced Resin Mineral Composites for Machine Tool Beds","authors":"Yunfang Long, Yi Zhang, He Zhao, Yuhan Xing, Jianhua Zhang","doi":"10.1134/s0965545x23600400","DOIUrl":"https://doi.org/10.1134/s0965545x23600400","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Resin mineral composites (RMC) have attracted a great deal of attention in ultra-precision machining because of their excellent vibration-dampening properties; however, their poor mechanical properties limit their wide applications. Adding reinforcing fibers is an effective way to improve the mechanical properties of RMC. This paper systematically studies the effect of aramid fibers as reinforcing components on the mechanical and thermal expansion properties of RMC. Results show that the mechanical strength of RMC can be effectively improved by a suitable selection of surface treatment methods and parameters. The mechanical strength of RMC reached its maximum value when the ultrasonic power was 200 W and the treatment time was 6 min; the mechanical strength of RMC reached its maximum value when the concentration of phosphoric acid oxidation was 20 wt % and the treatment time was 2 h. This study investigates the effect of different surface treatments on aramid fibers on the mechanical properties of resin mineral composites, optimizes the aramid fiber surface treatment parameters, enhances the mechanical properties of resin mineral composites, and extends the applications of resin mineral composites in high-speed processing and ultra-precision processing.</p>","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":null,"pages":null},"PeriodicalIF":1.206,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141609108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-12DOI: 10.1134/s0965545x24600133
Chengwu Hua, Haijun Chen, Gang Deng, Chao Shen
Abstract
The crystal morphologies of poly(ε-caprolactone) solvent-cast films in the absence and presence of multi-walled carbon nanotubes were observed using polarized optical microscopy. The experimental results indicated ring-banded spherulites containing polygonal holes could be induced by dewetting on the surface of the substrate. The polymer crystals assembled into a hierarchical structure induced by the change of the crystallization temperature. Further it was found that the loading of nanotubes into polymer matrix could change the ring-banded structure in the spherulites.
{"title":"Peculiar Crystal Structure in Poly(ε-caprolactone) and Poly(ε-caprolactone)/Multi-Walled Carbon Nanotube Solvent-Cast Films","authors":"Chengwu Hua, Haijun Chen, Gang Deng, Chao Shen","doi":"10.1134/s0965545x24600133","DOIUrl":"https://doi.org/10.1134/s0965545x24600133","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The crystal morphologies of poly(ε-caprolactone) solvent-cast films in the absence and presence of multi-walled carbon nanotubes were observed using polarized optical microscopy. The experimental results indicated ring-banded spherulites containing polygonal holes could be induced by dewetting on the surface of the substrate. The polymer crystals assembled into a hierarchical structure induced by the change of the crystallization temperature. Further it was found that the loading of nanotubes into polymer matrix could change the ring-banded structure in the spherulites.</p>","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":null,"pages":null},"PeriodicalIF":1.206,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141609110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-10DOI: 10.1134/s0965545x24600194
E. G. Korzhikova-Vlakh, A. Yu. Dzhuzha, V. D. Matvienko, G. A. Platonova, T. B. Tennikova
Abstract
Amphiphilic copolymers of amino acids capable of self-assembly in aqueous media into nanoparticles are of interest as potential drug delivery systems. In this work, a series of amphiphilic copolymers of lysine and phenylalanine with different chirality and content of monomer units are synthesized and characterized. Effect of the composition of copolymers on the characteristics and physicochemical and biological properties of nanoparticles formed due to self-assembly is studied. Specifically, the hydrodynamic characteristics of nanoparticles are determined and compared with average diameters in the dry state. Critical aggregation concentrations are assessed and effect of the рН of medium and the time of incubation on the stability of dispersions of nanoparticles is investigated. In addition, the data on the cytotoxicity of nanosystems depending on the chirality of hydrophobic amino acid are obtained.
{"title":"Effect of Chirality of Phenylalanine in a Copolymer with L-Lysine on the Self-Assembly and Properties of the Resulting Nanoparticles","authors":"E. G. Korzhikova-Vlakh, A. Yu. Dzhuzha, V. D. Matvienko, G. A. Platonova, T. B. Tennikova","doi":"10.1134/s0965545x24600194","DOIUrl":"https://doi.org/10.1134/s0965545x24600194","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Amphiphilic copolymers of amino acids capable of self-assembly in aqueous media into nanoparticles are of interest as potential drug delivery systems. In this work, a series of amphiphilic copolymers of lysine and phenylalanine with different chirality and content of monomer units are synthesized and characterized. Effect of the composition of copolymers on the characteristics and physicochemical and biological properties of nanoparticles formed due to self-assembly is studied. Specifically, the hydrodynamic characteristics of nanoparticles are determined and compared with average diameters in the dry state. Critical aggregation concentrations are assessed and effect of the рН of medium and the time of incubation on the stability of dispersions of nanoparticles is investigated. In addition, the data on the cytotoxicity of nanosystems depending on the chirality of hydrophobic amino acid are obtained.</p>","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":null,"pages":null},"PeriodicalIF":1.206,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-10DOI: 10.1134/s0965545x23600424
Linze Liu, Yang Yang, Tungalag Dong, Lijun Song, Xueyan Yun
Abstract
To maintain CO2/O2 permselectivity of poly(lactic acid) (PLLA) microporous films for better preservation of fresh produce, Polytrifluoropropylmethylsiloxane (PTFPMS) was introduced into PLLA to prepare PLLA-PTFPMS-PLLA (PLTL) block copolymer. And PLTL-n% microporous films were prepared using varying ratios of chloroform/acetone blended solvents as the film-casting solution in this study. PTFPMS filled a portion of the micropores of the PLTL-n% film. While the micropores enhanced the O2 and CO2 dioxide permeability of the PLLA microporous film, PTFPMS maintained the CO2/O2 selective permeability of the film. In comparison to PLLA films, the CO2 permeability of mixed solvents-treated PLTL-20% film increased from 1.99 × 10–8 to 10.08 × 10–8 cm3 m/m2 h Pa, O2 permeability increased from 0.70 × 10–8 to 2.02 × 10–8 cm3 m/m2 h Pa, and CO2/O2 permselectivity increased from 2.9 to 5.0 at 5°C. In addition, PLTL-n% microporous films also have good flexibility and UV shielding properties.
{"title":"Preparation and Characterization of PLLA-Based Microporous Membranes with High CO2/O2 Selective Permeability for Food Packaging","authors":"Linze Liu, Yang Yang, Tungalag Dong, Lijun Song, Xueyan Yun","doi":"10.1134/s0965545x23600424","DOIUrl":"https://doi.org/10.1134/s0965545x23600424","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>To maintain CO<sub>2</sub>/O<sub>2</sub> permselectivity of poly(lactic acid) (PLLA) microporous films for better preservation of fresh produce, Polytrifluoropropylmethylsiloxane (PTFPMS) was introduced into PLLA to prepare PLLA-PTFPMS-PLLA (PLTL) block copolymer. And PLTL-<i>n</i>% microporous films were prepared using varying ratios of chloroform/acetone blended solvents as the film-casting solution in this study. PTFPMS filled a portion of the micropores of the PLTL-<i>n</i>% film. While the micropores enhanced the O<sub>2</sub> and CO<sub>2</sub> dioxide permeability of the PLLA microporous film, PTFPMS maintained the CO<sub>2</sub>/O<sub>2</sub> selective permeability of the film. In comparison to PLLA films, the CO<sub>2</sub> permeability of mixed solvents-treated PLTL-20% film increased from 1.99 × 10<sup>–8</sup> to 10.08 × 10<sup>–8</sup> cm<sup>3</sup> m/m<sup>2</sup> h Pa, O<sub>2</sub> permeability increased from 0.70 × 10<sup>–8</sup> to 2.02 × 10<sup>–8</sup> cm<sup>3</sup> m/m<sup>2</sup> h Pa, and CO<sub>2</sub>/O<sub>2</sub> permselectivity increased from 2.9 to 5.0 at 5°C. In addition, PLTL-<i>n</i>% microporous films also have good flexibility and UV shielding properties.</p>","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":null,"pages":null},"PeriodicalIF":1.206,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-10DOI: 10.1134/s0965545x24600364
A. Yu. Alentiev, R. Yu. Nikiforov, V. P. Shantarovich, N. A. Belov, T. K. Musina, I. V. Stroeva, S. I. Banduryan, N. G. Shishkina
Abstract
The films of heterocyclic copolyaramide used at NPO OOO “LIRSOT” for the production of high-strength polyaramide threads are obtained, their gas transport characteristics for helium, oxygen, and carbon dioxide are studied, and the parameters of free volume elements are investigated by positron annihilation lifetime spectroscopy. According to the data obtained, the copolyaramide under study belongs to the class of polymers with high barrier characteristics and its properties are close to those of the commercial samples of thermotropic liquid-crystalline copolyesters Vectra. The low values of gas permeability of copolyaramide are related to decreased gas diffusion coefficients. A comparison of the activation energies of permeability, diffusion, and sorption enthalpy of gases shows that these parameters are also comparable to those of barrier polymers. The gas permeability data are confirmed by positron annihilation lifetime spectroscopy: the sizes of free volume elements obtained for copolyaramide (R3 = 2.5 Å) are also comparable with those for copolyester Vectra (R3 = 2.1 Å). The results of this study demonstrate that the tested domestic heterocyclic copolyaramide can be used for the manufacture of barrier films and coatings as a substitute for Vectra liquid-crystalline copolyesters.
{"title":"Copolyaramide As a Barrier Material","authors":"A. Yu. Alentiev, R. Yu. Nikiforov, V. P. Shantarovich, N. A. Belov, T. K. Musina, I. V. Stroeva, S. I. Banduryan, N. G. Shishkina","doi":"10.1134/s0965545x24600364","DOIUrl":"https://doi.org/10.1134/s0965545x24600364","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The films of heterocyclic copolyaramide used at NPO OOO “LIRSOT” for the production of high-strength polyaramide threads are obtained, their gas transport characteristics for helium, oxygen, and carbon dioxide are studied, and the parameters of free volume elements are investigated by positron annihilation lifetime spectroscopy. According to the data obtained, the copolyaramide under study belongs to the class of polymers with high barrier characteristics and its properties are close to those of the commercial samples of thermotropic liquid-crystalline copolyesters Vectra. The low values of gas permeability of copolyaramide are related to decreased gas diffusion coefficients. A comparison of the activation energies of permeability, diffusion, and sorption enthalpy of gases shows that these parameters are also comparable to those of barrier polymers. The gas permeability data are confirmed by positron annihilation lifetime spectroscopy: the sizes of free volume elements obtained for copolyaramide (<i>R</i><sub>3</sub> = 2.5 Å) are also comparable with those for copolyester Vectra (<i>R</i><sub>3</sub> = 2.1 Å). The results of this study demonstrate that the tested domestic heterocyclic copolyaramide can be used for the manufacture of barrier films and coatings as a substitute for Vectra liquid-crystalline copolyesters.</p>","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":null,"pages":null},"PeriodicalIF":1.206,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-07-10DOI: 10.1134/s0965545x24600376
Lingling Meng, Da Liu, Shijie Ding, Weihao Li, En Liu
Abstract
Conductive hydrogel-based flexible strain sensors have gradually attracted the attention of scientific researchers in recent years. They are capable of converting invisible mechanical stimulus signals into visible electrical signals and have excellent biocompatibility and good electrical conductivity, which also provide the basis for the development of flexible electronic devices. Nowadays, conductive hydrogel, as the core component of flexible sensors, puts forward higher requirements for sensitivity, fast response, and cycle stability to adapt to human activity detection and health monitoring. In this paper, acrylamide (AM), cellulose nanocrystals (CNC), and sodium alginate (SA) were used as raw materials to prepare PAM/CNC/SA double network hydrogel by in situ free radical polymerization. Soaked in the CaCl2 solution, a PAM/CNC/SA-Ca2+ double-network conductive hydrogel is formed. The results show that the addition of CNC can significantly improve the mechanical properties of the hydrogel. In addition, the introduction of the Ca2+ ion has a certain positive effect on the conductivity of the hydrogel. At the same time, the conductive hydrogel has good strain sensitivity (gauge factor up to 16.63). Therefore, conductive hydrogels have potential application value and broad application prospects in the field of flexible sensors.
{"title":"Preparation of Dual-Network Conductive Hydrogels As Wearable Flexible Strain Sensors Using One-Pot Method and Soaking Strategy","authors":"Lingling Meng, Da Liu, Shijie Ding, Weihao Li, En Liu","doi":"10.1134/s0965545x24600376","DOIUrl":"https://doi.org/10.1134/s0965545x24600376","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Conductive hydrogel-based flexible strain sensors have gradually attracted the attention of scientific researchers in recent years. They are capable of converting invisible mechanical stimulus signals into visible electrical signals and have excellent biocompatibility and good electrical conductivity, which also provide the basis for the development of flexible electronic devices. Nowadays, conductive hydrogel, as the core component of flexible sensors, puts forward higher requirements for sensitivity, fast response, and cycle stability to adapt to human activity detection and health monitoring. In this paper, acrylamide (AM), cellulose nanocrystals (CNC), and sodium alginate (SA) were used as raw materials to prepare PAM/CNC/SA double network hydrogel by in situ free radical polymerization. Soaked in the CaCl<sub>2</sub> solution, a PAM/CNC/SA-Ca<sup>2+</sup> double-network conductive hydrogel is formed. The results show that the addition of CNC can significantly improve the mechanical properties of the hydrogel. In addition, the introduction of the Ca<sup>2+</sup> ion has a certain positive effect on the conductivity of the hydrogel. At the same time, the conductive hydrogel has good strain sensitivity (gauge factor up to 16.63). Therefore, conductive hydrogels have potential application value and broad application prospects in the field of flexible sensors.</p>","PeriodicalId":738,"journal":{"name":"Polymer Science, Series A","volume":null,"pages":null},"PeriodicalIF":1.206,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141570310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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