摘要
采用静电纺丝技术制备聚乳酸(PLA)微/纳米纤维膜,研究了其可纺性、浸润性能及结构。结果表明:以二氯甲烷为溶剂的PLA电纺丝溶液,当PLA质量分数为7%时,可纺出纤维直径为280～690 nm的PLA微/纳米纤维膜。PLA微/纳米纤维膜与水的接触角为127.6°,高于PLA流延膜与水的接触角107.7°;红外光谱分析表明,PLA微/纳米纤维膜的分子组成没有发生变化;X光电子能谱测试表明PLA微/纳米纤维膜的表面碳氧含量比高于PLA流延膜,PLA微/纳米纤维膜的疏水性得到提高。
Polylactic acid （PLA） micro- and nano- fiber membranes were prepared by electrospinning. Their spinnability, wettability and structure were studied. The results showed that the PLA micro- and nano- fiber membrane can be prepared with the diameter of 280 -690 nm from PLA electrospinning solution with 7% PLA by mass fraction using methylene chloride as solvent. The contact angle between the fiber membrane and water was 127.6%, higher than the contact angle between cast film and water 107.7%. The infrared spectra showed that no transformation was observed in the molecular composition of PEA micro- and nanofiber membrane. X-ray photoelectron spectroscopic analysis showed that the PLA micro- and nano- fiber membrane had higher carbon-and-oxygen ratio on the surface than PLA cast film, and the hydrophobicity of PLA micro- and nano- fiber membrane was improved.
出处
《合成纤维工业》
CAS
CSCD
北大核心
2007年第4期5-7,共3页
China Synthetic Fiber Industry
基金
教育部新世纪优秀人才支持计划资助(NCET-05-0204)
国家自然科学基金项目(50503001)
北京市自然科学基金项目北京市教委科技发展计划项目(KZ200510012010)。
关键词
聚乳酸
静电纺丝
浸润性
流延膜
接触角
红外光谱
X光电子能谱
polylactic acid
eleetrospinning
immersion behavior
cast film
contact angle
infrared spectrum
X-ray photoelectron spectroscopy
