月桂酸纤维素酯/聚乙二醇相变储能纤维的制备及其性能

纺织学报 ›› 2016, Vol. 37 ›› Issue (4): 7-14.

月桂酸纤维素酯/聚乙二醇相变储能纤维的制备及其性能

收稿日期:2015-04-20 修回日期:2016-01-18 出版日期:2016-04-15 发布日期:2016-04-07

Preparation and performance of cellulose lauric acid esters/polyethylene glycal grafted copolymer fibers

Received:2015-04-20 Revised:2016-01-18 Online:2016-04-15 Published:2016-04-07

摘要/Abstract

摘要：

为获得具有优良相变储能性能的超细纤维，将聚乙二醇（PEG）链接到月桂酸纤维素酯（LACE）上,得到LACE/PEG接枝聚合物溶液后，用静电纺制备了LACE/PEG相变储能纤维；研究了纺丝液中PEG含量对所得纤维形态、相变储能及力学性能的影响；并通过水洗及循环热稳定性试验，分析了所得纤维的使用性和有效性。结果表明，含有不同PEG质量分数的LACE/PEG溶液均可纺制光滑的圆柱状纤维，但随PEG质量分数增加，纤维直径及相变焓增加，均一性及力学性能下降；由于PEG与LACE均具相变行为，且二者之间靠化学键链接，使LACE/PEG纤维不仅具有较高相变焓及适中的相变温度，而且相变过程可逆，热循环稳定性良好，是一种具有较高使用价值的相变储能纤维。

关键词: 静电纺, 聚乙二醇, 月桂酸纤维素酯, 接枝聚合物, 相变储能性能

Abstract:

Cellulose lauric acid esters/polyethylene glycol (LACE/PEG) graft copolymer fibers with excellent phase change energy storage performance were successfully prepared by grafting PEG on LACE to obtain LACE/PEG graft copolymer solution, and electrospinning. The effect of PEG content of the LACE/PEG solution on the fiber morphology,phase change energy storage properties, and the stress-strain characteristics were studied. Also, the usability and effectiveness of the prepared LACE/PEG graft copolymerization fibers were analyzed by washing and cycle thermal stability test. The results showed that the LACE/PEG solution with different PEG content all can be spun to obtain cylindrical fibers with smooth surface. However, the diameter and phase change enthalpy were increased, and the uniformity and mechanical properties of the LACE/PEG fiber were decline with the increase of PEG content in the spinning solution. Additionally, since the PEG and LACE both have phase change energy storage characteristics, and they couldn’t be washed out easily as they were linked by chemical bonds, the LACE/PEG fiber exhibited a completely reversible phase transition with high enthalpy, moderate temperature and good thermal cycle stability, indicating that it is an ideal phase change fiber with high use value.

Key words: electrostatic spinning, polyethylene glycal, cellulose lauric acid ester, grafted copolymer, phase change energy storage fiber

徐素梅哈丽丹买买提米娜瓦尔乌买尔鲁提夫拉吾守尔. 月桂酸纤维素酯/聚乙二醇相变储能纤维的制备及其性能[J]. 纺织学报, 2016, 37(4): 7-14.

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