Study on Non-isothermal Crystallization Kinetics of High-temperature Resistant Polyamides Prepared by Melt Polymerization
WANG Zhongqiang1,2, HU Guosheng1, ZHANG Jingting1, XU Jiusheng2, SHAO Zhengjie3
1 Institute of Macromolecules and Bioengineering,North University of China,Taiyuan 030051; 2 Guangdong Sinoplast Advanced Material Co. Ltd., Dongguan 523860; 3 School of Physics and Telecommunication Engineering,South China Normal University, Guangzhou 510006
Abstract: Poly(decamethylene terephthalamide) (PA10T) and decamethylene terephthalamide-aminoundecanoic copolyamide (PA10T/11) were prepared by melt polymerization. The non-isothermal crystallization behaviors of PA10T and PA10T/11 at di-fferent cooling rates were studied by means of differential scanning calorimetry (DSC). Avrami and Ozawa equations, along with the Mo equation were applied to obtain the non-isothermal crystallization kinetics of PA10T and PA10T/11. Moreover, the activation energy of non-isothermal crystallization of PA10T and PA10T/11 was explored by Kissinger, Takhor and Vyazovkin equations, respectively. The results showed that the mode of the nucleation and crystal growth may be the mixture with one-dimensional, needle-like and two-dimensional, circular. Meanwhile, there was heterogeneous nucleation phenomenon during the non-isothermal crystallization process. Jeziorny and Mo equations well described the non-isothermal crystallization kinetics of PA10T and PA10T/11, while Ozawa equation failed. With the increasing contents of 11-aminoundecanoic acid, the absolute values of activation energy of non-isothermal crystallization first decreased, then increased and finally decreased, which revealed that crystallization rates first increased, then decreased and finally increased.
1 Wang W Z, Huang A M, Liu A X, et al. Synthesis and characte-rization of long chain semiaromatic polyamides based on undecanediamine[J]. J Wuhan University of Technology:Mater Sci Ed,2012,27(4):689. 2 Wang W Z, Zhang Y H. Environment-friendly synthesis of long chain semiaromatic polyamides[J]. Express Polym Lett,2009,3(8):470. 3 Zhang G, Zhou Y X, Kong Y, et al. Semiaromatic polyamides containing ether and different numbers of methylene (2-10) units: Synthesis and properties[J]. RSC Adv,2014,4(108):63006. 4 Wang L H, Calleja F J B, Kanamoto T, et al. The characterization and properties of nylon 13,13[J]. Polymer,1993,34(22):4688. 5 Hu G S, Ding Z Y, Li Y C, et al. Crystalline morphology and mel-ting behavior of nylon11/ethylene-vinyl alcohol/dicumyl peroxide blends[J]. J Polym Res,2009,16(3):263. 6 Cui X W, Yan D Y, Wang Y P. Isothermal and nonisothermal crystallization kinetics of novel even-odd nylon 1011[J]. J Appl Polym Sci,2005,97(4):1637. 7 Liu M Y, Zhao Q X, Wang Y D, et al. Melting behaviors, isothermal and non-isothermal crystallization kinetics of nylon 1212[J]. Polymer,2003,44(8):2537. 8 Zhang X K, Xie T X, Yang G S. Isothermal crystallization and mel-ting behaviors of nylon 11/nylon 66 alloys by in situ polymerization[J]. Polymer,2006,47(6):2116. 9 Wang Y D, Fu P, Li X G, et al. The isothermal melt crystallization kinetics of nylon 612[J]. Polym Mater Sci Eng,2011,27(2):103(in Chinese). 王玉东, 付鹏, 李晓光, 等. 尼龙612的等温结晶动力学[J]. 高分子材料科学与工程,2011,27(2):103. 10 Ozawa T. Kinetics of non-isothermal crystallization[J]. Polymer,1971,12(3):150. 11 Jeziorny A. Parameters characterizing the kinetics of the non-isothermal crystallization of poly(ethylene terephthalate) determined by d.s.c.[J]. Polymer,1978,19(10):1142. 12 Ziabicki A. Theoretical analysis of oriented and non-isothermal crystallization. Ⅱ:Extension of the kolmogoroff-avrami-evans theory onto processes with variable rates and mechanisms[J]. Colloid Polym Sci,1974,252(6):433. 13 Mandelkern L. Crystallization of polymers[M]. NewYork: Mc Graw-Hill Press,1964. 14 Patel R M, Bheda J H, Spruiell J E. Dynamics and structure deve-lopment during high-speed melt spinning of nylon 6. Ⅱ. Mathematical modeling[J]. J Appl Polym Sci,1991,42(6):1671. 15 Zhang Z Y. Theoretical analysis of kinetics of nonisothermal crystallization of polymers[J]. Chin J Polym Sci,1994(3):256. 16 Liu T X, Mo Z S, Wang S E, et al. Nonisothermal melt and cold crystallization kinetics of poly(aryl ether ether ketone ketone)[J]. Polym Eng Sci,1997,37(3):568. 17 Sharples A. Introduction to polymer crystallization[M]. London: Edward Arnold,1996:122 18 Gao G H, Li W H, Yan D Y. Investigation on crystallization kine-tics of nylon 1218[J]. Acta Polym Sin,2004,1(4):465(in Chinese). 高光辉, 李卫华, 颜德岳. 尼龙1218的等温及非等温结晶动力学研究[J]. 高分子学报,2004,1(4):465. 19 López L C, Wilkes G L. Non-isothermal crystallization kinetics of poly(p-phenylene sulphide)[J]. Polymer,1989,30(5):882. 20 Supaphol P. Nonisothermal bulk crystallization and subsequent mel-ting behavior of syndiotactic polypropylenes: Crystallization from the melt state[J]. J Appl Polym Sci,2000,78(2):338. 21 Zhang Z Y. Study on theory and method of crystallization kinetics of polymers[D]. Tianjin: Tianjin Polytechnic University,2006(in Chinese). 张志英. 聚合物结晶动力学理论和方法研究[D]. 天津: 天津工业大学,2006. 22 Sajkiewicz P, Carpaneto L, Wasiak A. Application of the Ozawa model to non-isothermal crystallization of poly(ethylene terephthalate)[J]. Polymer,2001,42(12):5365. 23 Seo Y S. Nonisothermal crystallization kinetics of polytetrafluoroethylene[J]. Polym Eng Sci,2000,40(6):1293. 24 Cazé C, Devaux E, Crespy A, et al. A new method to determine the Avrami exponent by d.s.c. studies of non-isothermal crystallization from the molten state[J]. Polymer,1997,38(3):497. 25 Mo Z S. A method for the non-isothermal crystallzation kinetics of polymers[J]. Acta Polym Sin,2008,1(7):656. 26 Liu Y, Yang G S. Non-isothermal crystallization kinetics of polya-mide-6/graphite oxide nanocomposites[J]. Thermochim Acta,2010,500(1):13. 27 Shi J S, Yang X J, Wang X, et al. Non-isothermal crystallization kinetics of nylon 6/attapulgite nanocomposites[J]. Polym Test,2010,29(5):596. 28 Zhang Q X, Mo Z S. Melting crystallization behavior of nylon 66[J]. Chin J Polym Sci,2001,19(3):237. 29 Zhang Q X, Zhang Z H, Zhang H F, et al. Isothermal and nonisothermal crystallization kinetics of nylon-46[J]. J Polym Sci Part B,2002,40(16):1784. 30 Ma Y L, Hu G S, Ren X L, et al. Non-isothermal crystallization kinetics and melting behaviors of nylon 11/tetrapod-shaped ZnO whisker (T-ZnOw) composites[J]. Mater Sci Eng A,2007,s460-461(1):611. 31 Liu M Y, Zhao Q X, Wang Y D, et al. Melting behaviors, isothermal and non-isothermal crystallization kinetics of nylon 1212[J]. Polymer,2003,44(8):2537. 32 Kissinger H E. Variation of peak temperature with heating rate in differential thermal analysis [J]. J Res National Bureau Standards,1956,57(4):217. 33 Takhor R. Advances in nucleation and crystallization of glasses[M]. Columbus: American Ceramics Society,1971:166. 34 Vyazovkin S, Sbirrazzuoli N. Isoconversional approach to evaluating the Hoffman-Lauritzen Parameters (U* and Kg) from the overall rates of nonisothermal crystallization[J]. Macromolecular Rapid Commun,2004,25(6):733. 35 Vyazovkin S, Dranca I. Isoconversional analysis of combined melt and glass crystallization data[J]. Macromolecular Chem Phys,2006,207(1):20. 36 Achilias D S, Papageorgiou G Z, Karayannidis G P. Isothermal and nonisothermal crystallization kinetics of poly(propylene terephthalate)[J]. J Polym Sci Part B,2004,42(20):3775.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2017, Vol. 31 
