Effect of a low-molecular-weight compatibilizer on the immiscible blends of cellulose acetate propionate and poly(butylene terephthalate)

doi:10.1007/s10965-018-1487-5

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Title:	Effect of a low-molecular-weight compatibilizer on the immiscible blends of cellulose acetate propionate and poly(butylene terephthalate)
Authors:	Liang, Nai-Yun Don, Trong-Ming Huang, Chih-Yuan Lee, Chia-Fen Chiu, Wen-Yen
Contributors:	Natl Taiwan Univ, Inst Polymer Sci & Engn Tamkang Univ, Dept Chem & Mat Engn Chia Nan Univ Pharm & Sci, Dept Cosmet Sci Natl Taiwan Univ, Dept Chem Engn Natl Taiwan Univ, Dept Mat Sci & Engn
Keywords:	Cellulose acetate propionate (CAP) Poly(butylene terephthalate) (PBT) Compatibilizer Partially miscible Nanofiber
Date:	2018-03-06
Issue Date:	2019-11-15 15:48:02 (UTC+8)
Publisher:	SPRINGER
Abstract:	Blends of poly(butylene terephthalate) (PBT) and cellulose acetate propionate (CAP) were found to be immiscible. In order to improve the interfacial strength and miscibility of the PBT/CAP blends, a low-molecular-weight poly(ethylene glycol) (PEG) was thus pre-mixed with the CAP to form the P-CAP mixture. It was then blended with the PBT up to 15 wt% using a twin-screw extruder to prepare the PBT/P-CAP blends, and subsequently processed into the films and fibers by compression-molding and melt-spinning, respectively. The thermal and dynamic mechanical analyses suggested that the PBT and CAP became partially miscible and the interfacial strength was thus improved in the PBT/ PCAP blends, owing to the addition of PEG. The PEG was not only miscible with the CAP but also with the PBT, and it served as a plasticizer as well as a compatibilizer. From the observation of the fractured surface of the PBT/P-CAP films, the PBT component was present as dispersed particles in the P-CAP matrix with size ranging from 1.4 to 3.0 mu m; yet it became nanofiber in the spun fibers. Successful fibers of the PBT/ P-CAP blends with an average diameter of 20 mu m could be spun, where the tensile strength and elongation at break were in the range of 0.6-0.7 g/denier and 12-16%, respectively. Finally, the ultra-fine PBT nanofibers with diameters in the range of 50-70 nm were observed after removing the P-CAP matrix with acetone from the fibers, owing to the formation of PBT nanofibers during spinning and orientation processes. This method thus could successfully produce nano-scale PBT fibers with fineness comparable with the nanofibers developed via electrospinning technology.
???metadata.dc.relation.uri???:	http://dx.doi.org/10.1007/s10965-018-1487-5
Relation:	European Radiology, v.25, n.4, 88
Appears in Collections:	[Dept. of Cosmetic Science and institute of cosmetic science] Periodical Articles

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