相变微胶囊基LyocelI纤维的制备及性能

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中图分类号：TQ341 文献标志码：A

Abstract： A series of phase change Lyocellfibers with diferent phase change microcapsule （PCM） adition amounts （mass fractions）were preparedbyblendingPCMs withcelulose spinning liquid viadry-jet wet-spinning technology.The influence of the PCM addition amount on properties of the fibers was analyzed using field-emission scanning electron microscopy， infraredspectrometry，fiberstrength meter，and differential scannngcalorimetry.Theresultsshowed thatPCM was uniformly dispersed in the fibers.With the increase of PCM adition amount， the fiber surface became rougher，the fiber breakingstrengtdcreased，andelongationatbreak，ethalpy，andtalcyclingstabilityallicreased.AtaCddiion amount of 30% ，the fiber exhibited a breaking strength of 2.98cN. /dtex， a melting enthalpy of 30.1J/g， and a crystallization enthalpy of 31.9J/g . Dyeing tests revealed that， compared to the pure Lyocell fiber （without PCM）， the fiber with 30% PCM addition amount exhibited lower dye uptake and fixation rates.Nevertheles， it stillhad excellent dyeing performance.

Keywords： celulose；phase change Lyocel fiber;phase change microcapsule；enthalpy；thermal cycle stability

Lyocell纤维是将纤维素直接溶解在N-甲基吗啉-N-氧化物（NMMO）中再采取干湿法纺丝制得的再生纤维素纤维[1，2]，具有较高的强度、良好的悬垂性以及真丝的手感、光泽[3，4]。（剩余11855字）