半芳香族共聚酰胺10T和10T/106的非等温结晶动力学分析
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摘要
合成了半芳香族共聚尼龙PA10T/106,并通过核磁共振氢谱(1H NMR)确定了其结构。采用差示扫描量热法(DSC)对其非等温结晶及熔融行为进行了研究。Jeziorny法和Mo法被用来确定PA10T/106的非等温结晶动力学参数。研究发现,PA10T/106比PA10T熔点更低,有更宽的加工窗口。PA106的引入并没有改变PA10T的晶体生长方式,二者均为二维生长。在降温速率较小时,PA10T/106的结晶速率比PA10T略小,而当降温速率较大时,PA10T/106的结晶速率比PA10T大。
The semi-aromatic copolymer nylon PA10 T/106 was synthesized and its structure was determined by1 H NMR analysis. The non-isothermal crystallization and melting behavior were studied by differential scanning calorimetry( DSC). Jeziorny method and Mo method were used to determine the nonisothermal crystallization kinetics parameters of PA10 T/106. The study shows that PA10 T/106 has lower melting point and wider processing window than PA10 T. The introduction of PA106 could not change the crystal growth mode of PA10 T. Both of them are two-dimensional growth. When the cooling rate is low,the crystallization rate of PA10 T/106 is slightly lower than PA10 T. When the cooling rate is high, the crystallization rate of PA10 T/106 is higher than PA10 T.
The semi-aromatic copolymer nylon PA10 T/106 was synthesized and its structure was determined by1 H NMR analysis. The non-isothermal crystallization and melting behavior were studied by differential scanning calorimetry( DSC). Jeziorny method and Mo method were used to determine the nonisothermal crystallization kinetics parameters of PA10 T/106. The study shows that PA10 T/106 has lower melting point and wider processing window than PA10 T. The introduction of PA106 could not change the crystal growth mode of PA10 T. Both of them are two-dimensional growth. When the cooling rate is low,the crystallization rate of PA10 T/106 is slightly lower than PA10 T. When the cooling rate is high, the crystallization rate of PA10 T/106 is higher than PA10 T.
引文
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[2]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):63006-63015.
[3]WANG H H.Synthesis of nylon 6,6 copolymers with aromatic polyamide structure[J].J Appl Polym Sci,2001,80(12):2167-2175.
[4]WANG J K,GUO X,XU Y H,et al.Synthesis and characterization of long chain alkyl acyl carnitine esters.Potentially biodegradable cationic lipids for use in gene delivery[J].J Med Chem,1998,41(13):2207-2215.
[5]ENDO M,MORISHIMA Y,YANO S,et al.Miscibility in binary blends of aromatic and alicyclic polyamides[J].JAppl Polym Sci,2010,101(6):3971-3978.
[6]LIU B X,HU G S,ZHANG J T,et al.Synthesis,characterization and thermal decomposition kinetics of a bio-based transparent nylon 10I/10T[J].Des Monomers Polym,2018,21(1):182-192.
[7]UDDIN A J,OHKOSHI Y,GOTOH Y,et al.Melt spinning and laser-heated drawing of a new semiaromatic polyamide,PA9-T fiber[J].J Polym Sci,Part B:Polym Phys,2010,42(3):433-444.
[8]FENG W T,WANG P L,ZOU G J,et al.Synthesis and characterization of semiaromatic copolyamide 10T/1014 with high performance and flexibility[J].Des Monomers Polym,2018,21(1):33-42.
[9]LU X F,HAY J N.Isothermal crystallization kinetics and melting behaviour of poly(ethylene terephthalate)[J].Polymer,2001,42(23):9423-9431.
[10]王忠强,胡国胜,张静婷,等.熔融聚合耐高温聚酰胺的非等温结晶动力学研究[J].材料导报,2017,31(6):161-170.
[11]LAYACHI A,FRIHI D,SATHA H,et al.Non-isothermal crystallization kinetics of polyamide 66/glass fibers/carbon black composites[J].J Thermal Anal Calorim,2018,124(3):1-11.
[12]XING J,XIE C,QIAN C,et al.Non-isothermal crystallization kinetics of ramie fiber-reinforced polylactic acid biocomposite[J].Rsc Adv,2017,7(73):46014-46021.
[13]SU OL J J,SAURINA J,BERLANGA R,et al.Crystallization kinetics of polypropylene-polyethylene-based copolymers[J].J Thermal Anal Calorim,1999,55(1):57-65.
[14]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):1142-1144.
[15]LIU T X,MO Z S,WANG S G,et al.Nonisothermal melt and cold crystallization kinetics of poly(aryl ether ether ketone ketone)[J].Polym Eng Sci,2010,37(3):568-575.
[16]WANG Y,KANG H L,WANG R,et al.Crystallization of polyamide 56/polyamide 66 blends:Non-isothermal crystallization kinetics[J].J Appl Polym Sci,2018,135(26):46409.