摘要
为增强增韧聚乳酸纤维,采用聚酰胺(PA)与聚乳酸(PLA)制备了PLA/PA共混纤维,并对其热学性能、结晶、热稳定性、PA的分散性以及PLA/PA共混纤维的力学性能进行了研究。研究结果表明:PA的加入对PLA的玻璃化转变温度及熔融温度没有显著影响,但改善了PLA的结晶行为,结晶度提高了551.6%;PLA热稳定性随着PA含量的增加而提高;PA在PLA中分散均匀;随着牵伸倍数的增加,PLA/PA共混纤维的取向度提高,力学性能得到改善,当牵伸倍数从1.5增加到3.0时,取向度提高了30.88%,同时纤维的断裂强度提高了48.58%;当PA质量分数为1%和20%时,PA/PLA共混纤维的断裂强度分别提高了8.6%和25%,断裂伸长率分别提高了10.9%和55.9%。
In order to reinforce and toughen polylactic acid（PLA） fiber,polyamide（PA） was blended with PLA,and then spun.The thermal property,crystallization,heat stability,dispersibility of PA and mechanical property of PLA/PA fiber were studied.The results show that the addition of PA has no significance effect on the glass transition temperature and melting temperature of PLA,but the crystallization behavior of PLA is improved,and the degree of crystallinity enhances by 551.6%.The heat stability of PLA is improved with the increasing of the content of PA,and the dispersibility of PA is very uniform in PLA.With the increasing of the draft ratio,the orientation degree and mechanical property of PLA/PA fiber are enhanced.When the draft ratio increased from 1.5 to 3.0,the orientation degree and breaking strength of PLA/PA fiber enhances by 30.88% and 48.58%,respectively.When the content of PA is 1% and 20%,the breaking strength of PLA/PA fiber increases by 8.6% and 25%,and the elongation at break of PLA/PA increases by 10.9% and 55.9%,respectively.
作者
李旭明
孙西超
师利芬
LI Xuming SUN Xichao SHI Lifen(College of Textile and Garment, Shaoxing University, Shaoxing, Zhejiang 312000, China Shaoxing Entry-Exit Inspection and Quarantine Bureau, Shaoxing, Zhejiang 312000, China)
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2017年第4期12-16,共5页
Journal of Textile Research
基金
浙江省科技厅计划项目(2015C31172)
绍兴市科技局计划项目(2015B70010)
关键词
增强增韧
聚乳酸
聚酰胺
共混纤维
reinforcing and toughening
polylactic acid
polyamide
blend fiber
