摘要
采用熔融纺丝法制备回收乙酸纤维素(R–CA)改性聚乳酸(PLA)复合纤维(PLA/R–CA),采用差示扫描量热仪、扫描电子显微镜、热失重分析等对复合纤维进行了详细表征,考察了R–CA含量对复合纤维力学性能、热稳定性、熔融和降解行为的影响;以R–CA含量为15%的PLA/R–CA复合纤维为中试原料制备过滤棒,评估了复合丝束过滤棒对不同蒸汽和烟气的吸附性能。结果表明,随R–CA含量增大,复合纤维力学性能呈先增大后降低的趋势,当R–CA含量为10%时,拉伸强度最高为5.7 cN/dtex,断裂伸长率下降;同时,R–CA的加入导致复合纤维的热稳定性逐渐下降,冷结晶受限,降解速率增大。复合纤维丝束滤棒对极性和非极性气体均具有较高的吸附能力,在绿色烟用滤嘴材料方面具有一定的应用前景。
Recycled cellulose acetate(R–CA)modified polylactic acid(PLA)composite fibers(PLA/R–CA)were prepared by using melt spinning method,and then characterized by differential scanning calorimetry,scanning electron microscopy,thermogravimetric analysis,and so on.The effects of R–CA content on the mechanical properties,thermal stability,melting and degradation behavior of the composite fibers were investigated.By using PLA/R–CA composite fibers with 15%content of R–CA as the raw material of pre-production test to prepare composite tow filter rod,the adsorption performance of composite tow filter rod towards different vapors tobacco gas was evaluated.The results show that with the increase of R–CA content,the mechanical property of the composite fibers is increased firstly and then decrease.When R–CA content is 10%,the maximum tensile strength is 5.7 cN/dtex,and the elongation at break is decreased.The thermal stability is gradually decreased,the cold crystallization is limited,and the degradation rate is increased with the introduction of R–CA.The tow filter rods has high adsorption capacity towards polar and nonpolar vapors,which resulted in the potential application in green cigarette filter materials.
作者
杨光远
杨俊鹏
李哲铭
曹祥薇
彭三文
Yang Guangyuan;Yang Junpeng;Li Zheming;Cao Xiangwei;Peng Sanwen(Hubei China Tobacco Cigarette Material Factory,Wuhan 430050,China;Hubei China Tobacco New Tobacco Engineering Center,Wuhan 430040,China)
出处
《工程塑料应用》
CAS
CSCD
北大核心
2021年第9期40-44,共5页
Engineering Plastics Application
关键词
回收乙酸纤维素
聚乳酸
复合纤维
结构与性能
recycled cellulose acetate
polylactide acid
composite fiber
structure and property
