Chao Lin, F. Zou, M. P. Fernández‐Ronco, Yurong Yan, R. Hufenus
Polymer crystallization obeys the laws of thermodynamics. Studying dynamic crystallization from melt to solid state may extend the general understanding of the crystallization behavior of polymers. In this work, non-isothermal crystallization kinetics of copolyamide 6/12 (CoPA6/12) with different copolymerization ratios were investigated by differential scanning calorimetry (DSC). Jeziorny modified Avrami equation, Ozawa equation and Liu-Mo’s method were applied to analyze the nonisothermal crystallization kinetics of CoPA6/12. The crystallization activation energy was evaluated using both Kissinger and Friedman methods. Results show that the incorporation of ω-laurolactam (LL) into polyamide 6 (PA6) decreases crystallization rate and increases crystallization activation energy. The findings further indicate that This document is the accepted manuscript version of the following article: Lin, C., Zou, F., Fernández-Ronco, M. P., Yan, Y., & Hufenus, R. (2019). Melting behavior and non-isothermal crystallization kinetics of copolyamide 6/12. Polymer Crystallization, 2(4), e10054 (10 pp.). https://doi.org/10.1002/pcr2.10054
{"title":"Melting behavior and non‐isothermal crystallization kinetics of copolyamide 6/12","authors":"Chao Lin, F. Zou, M. P. Fernández‐Ronco, Yurong Yan, R. Hufenus","doi":"10.1002/PCR2.10054","DOIUrl":"https://doi.org/10.1002/PCR2.10054","url":null,"abstract":"Polymer crystallization obeys the laws of thermodynamics. Studying dynamic crystallization from melt to solid state may extend the general understanding of the crystallization behavior of polymers. In this work, non-isothermal crystallization kinetics of copolyamide 6/12 (CoPA6/12) with different copolymerization ratios were investigated by differential scanning calorimetry (DSC). Jeziorny modified Avrami equation, Ozawa equation and Liu-Mo’s method were applied to analyze the nonisothermal crystallization kinetics of CoPA6/12. The crystallization activation energy was evaluated using both Kissinger and Friedman methods. Results show that the incorporation of ω-laurolactam (LL) into polyamide 6 (PA6) decreases crystallization rate and increases crystallization activation energy. The findings further indicate that This document is the accepted manuscript version of the following article: Lin, C., Zou, F., Fernández-Ronco, M. P., Yan, Y., & Hufenus, R. (2019). Melting behavior and non-isothermal crystallization kinetics of copolyamide 6/12. Polymer Crystallization, 2(4), e10054 (10 pp.). https://doi.org/10.1002/pcr2.10054","PeriodicalId":36413,"journal":{"name":"Polymer Crystallization","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/PCR2.10054","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48706242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Hirai, T. Matsunaga, Norikazu Sato, Y. Katagiri, J. Kawada, A. Usuki
{"title":"High‐temperature crystallization of immiscible polymer blends induced by the shear flow in injection molding","authors":"T. Hirai, T. Matsunaga, Norikazu Sato, Y. Katagiri, J. Kawada, A. Usuki","doi":"10.1002/PCR2.10069","DOIUrl":"https://doi.org/10.1002/PCR2.10069","url":null,"abstract":"","PeriodicalId":36413,"journal":{"name":"Polymer Crystallization","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/PCR2.10069","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42593061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Qian Ding, M. Soccio, N. Lotti, N. Mahmood, D. Cavallo, R. Androsch
{"title":"Crystallization of poly(butylene 2,6‐naphthalate) containing diethylene 2,6‐naphthalate constitutional defects","authors":"Qian Ding, M. Soccio, N. Lotti, N. Mahmood, D. Cavallo, R. Androsch","doi":"10.1002/PCR2.10044","DOIUrl":"https://doi.org/10.1002/PCR2.10044","url":null,"abstract":"","PeriodicalId":36413,"journal":{"name":"Polymer Crystallization","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/PCR2.10044","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46572922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Optically transparent nanocomposite films based on poly(vinylidene fluoride) and single walled carbon nanotube: Role of process parameters on polymorphic changes","authors":"R. Roy, Bhuvaneswari Soundiraraju, R. Rajeev","doi":"10.1002/PCR2.10074","DOIUrl":"https://doi.org/10.1002/PCR2.10074","url":null,"abstract":"","PeriodicalId":36413,"journal":{"name":"Polymer Crystallization","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/PCR2.10074","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43111147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jérémie Grange, A. V. Radchenko, Rachid Matmour, François Jean‐Baptiste dit Dominique, S. Grelier, F. Peruch
Natural Rubber (NR) is a polyisoprene (PI) from renewable resources that exhibits mechanical and thermal properties not accessible with synthetic polyisoprenes (IR). In this article, it was developed a simple route to synthesize new models of NR (PI with a pure microstructure (100% 1,4-cis) and two fatty esters linked to the polymer chain-end) in order to clarify the role played by lipids on the “cold crystallization” (CCr) of NR. DSC analysis of this new hybrid polymer revealed that the lipids linked to the backbone were able to crystallize despite of the amorphous matrix, the crystallization temperature being dependent on the length of the linked fatty chain. Furthermore, it was observed that the linked fatty chains prevented PI to crystallize at low temperature (-25°C). Finally, the addition of free fatty acids to the hybrid polymer enhanced the crystallization of the PI chain, more particularly when stearic acid and methyl linoleate were used simultaneously as additives. A
{"title":"New insight into the cold crystallization of natural rubber: The role of linked and free fatty chains","authors":"Jérémie Grange, A. V. Radchenko, Rachid Matmour, François Jean‐Baptiste dit Dominique, S. Grelier, F. Peruch","doi":"10.1002/PCR2.10075","DOIUrl":"https://doi.org/10.1002/PCR2.10075","url":null,"abstract":"Natural Rubber (NR) is a polyisoprene (PI) from renewable resources that exhibits mechanical and thermal properties not accessible with synthetic polyisoprenes (IR). In this article, it was developed a simple route to synthesize new models of NR (PI with a pure microstructure (100% 1,4-cis) and two fatty esters linked to the polymer chain-end) in order to clarify the role played by lipids on the “cold crystallization” (CCr) of NR. DSC analysis of this new hybrid polymer revealed that the lipids linked to the backbone were able to crystallize despite of the amorphous matrix, the crystallization temperature being dependent on the length of the linked fatty chain. Furthermore, it was observed that the linked fatty chains prevented PI to crystallize at low temperature (-25°C). Finally, the addition of free fatty acids to the hybrid polymer enhanced the crystallization of the PI chain, more particularly when stearic acid and methyl linoleate were used simultaneously as additives. A","PeriodicalId":36413,"journal":{"name":"Polymer Crystallization","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/PCR2.10075","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47013451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Depan, A. Khattab, Austin Simoneaux, William M. Chirdon
{"title":"Crystallization kinetics of high‐density and low‐density polyethylene on carbon nanotubes","authors":"D. Depan, A. Khattab, Austin Simoneaux, William M. Chirdon","doi":"10.1002/PCR2.10062","DOIUrl":"https://doi.org/10.1002/PCR2.10062","url":null,"abstract":"","PeriodicalId":36413,"journal":{"name":"Polymer Crystallization","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/PCR2.10062","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42473548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Ullah, Shakir Ullah, N. Mahmood, Syed M. Shah, Z. Hussain, H. Hussain
{"title":"Effect of polyhedral oligomeric silsesquioxane nanocage on the crystallization behavior of PEG\u0000 5k\u0000 ‐\u0000 b\u0000 ‐P(MA‐POSS) diblock copolymers achieved via atom transfer radical polymerization","authors":"A. Ullah, Shakir Ullah, N. Mahmood, Syed M. Shah, Z. Hussain, H. Hussain","doi":"10.1002/PCR2.10058","DOIUrl":"https://doi.org/10.1002/PCR2.10058","url":null,"abstract":"","PeriodicalId":36413,"journal":{"name":"Polymer Crystallization","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/PCR2.10058","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46966756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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