β-Cyclodextrin-Based Poly (Vinyl Alcohol) Fibers for Sustained Release of Fragrances

Chengyuan Xing; Xia Xu; Lei Song; Xiaoling Wang; Bangjing Li; Kun Guo

doi:10.3390/polym14102002

β-Cyclodextrin-Based Poly (Vinyl Alcohol) Fibers for Sustained Release of Fragrances

Polymers (Basel). 2022 May 13;14(10):2002. doi: 10.3390/polym14102002.

Authors

Chengyuan Xing^{1

2}, Xia Xu¹, Lei Song¹, Xiaoling Wang¹, Bangjing Li², Kun Guo¹

Affiliations

¹ College of Pharmacy, Southwest Minzu University, Chengdu 610041, China.
² Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China.

Abstract

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 cis-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.

Keywords: fragrance retention; functional fibers; polyvinyl alcohol; wet spinning; β-cyclodextrin.

Grants and funding

This research is supported by the Fundamental Research Funds for the Central Universities, Southwest Minzu University (NO. ZYN2022058), and Central Government Funds of Guiding Local Scientific and Technological Development for Sichuan Province (No. 2021ZYD0057).