Xing Chengyuan, Xu Xia, Song Lei, Wang Xiaoling, Li Bangjing, Guo Kun
College of Pharmacy, Southwest Minzu University, Chengdu 610041, China.
Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China.
Polymers (Basel). 2022 May 13;14(10):2002. doi: 10.3390/polym14102002.
Poly (vinyl alcohol)/β-cyclodextrin (PVA/CD) composite fibers are prepared by wet spinning followed by hot stretching. XRD results show that β-CDs are in an amorphous state in fiber, and β-CD can help maintain the fibrous crystal that exists in the composite fiber. The DSC results show that the total crystalline ratio of the composite fibers decreased with the increase of β-CD. The as-prepared composite fibers were further crosslinked with glutaraldehyde (GA) to improve their usability. The crosslinked structure, together with amorphous β-CD, contributes to the loading and sustained release of fragrance molecules that were studied. The fragrance retention ratio of PVA/CD/GA is 55.63% and 48.25% for -jasmone and citronella, even after 25 days. The inclusion complexes of β-CD and fragrance molecules are confirmed by 2D-FTIR, which is responsible for the sustained release of fragrance. This study may contribute to the mass production of wearable long-term scented fabrics.
通过湿法纺丝然后热拉伸制备了聚乙烯醇/β-环糊精（PVA/CD）复合纤维。X射线衍射结果表明，β-环糊精在纤维中处于无定形状态，且β-环糊精有助于维持复合纤维中存在的纤维状晶体。差示扫描量热法结果表明，复合纤维的总结晶率随β-环糊精含量的增加而降低。将制备好的复合纤维进一步与戊二醛（GA）交联以提高其可用性。交联结构与无定形β-环糊精共同作用，有助于所研究的香料分子的负载和缓释。即使经过25天，PVA/CD/GA对茉莉酮和香茅醛的香料保留率仍分别为55.63%和48.25%。二维傅里叶变换红外光谱证实了β-环糊精与香料分子的包合物，这是香料缓释的原因。该研究可能有助于可穿戴长期留香织物的大规模生产。
