Enhancing the crystallization of poly(L-lactide) using a montmorillonitic substrate favoring nucleation

	Enhancing the crystallization of poly(L-lactide) using a montmorillonitic substrate favoring nucleation
	Zhao, Hongwei ; Bian, Yijie ; Xu, Mingzhi ; Han,Changyu ; Li,Yi ; Dong,Qinglin ; Dong,Lisong
刊名	crystengcomm
	2014
卷号	16 期号:19 页码:3896-3905
关键词	ISOTACTIC POLYPROPYLENE HYDROLYTIC DEGRADATION MECHANICAL-PROPERTIES POLY(LACTIC ACID) NANOCOMPOSITES AGENT STEREOCOMPLEX BEHAVIOR POLYLACTIDE KINETICS
通讯作者	zhao,hw
英文摘要	montmorillonite (mmt) generally has weak nucleating ability or even retarded crystallization for poly(l-lactide) (plla) depending on the dispersion morphology in the matrix. a novel mmt with a nucleating surface (nmmt) chemically supported by calcium phenylphosphonic acid (ppca) (an effective nucleant of plla), was prepared through the chemical reaction between phenylphosphonic acid (ppoa) and a calcium ion on the surface of mmt for the first time. differential scanning calorimetry, infrared spectroscopy and wide-angle x-ray diffraction confirm the reaction between ppoa and ca-montmorillonite and the formation of ppca on the surface of mmt. then, nmmt was introduced into plla via simple melt blending. the most intriguing result is that the crystallization rate of plla greatly increases after incorporation of nmmt, and the crystallization rate of plla increases with increasing nmmt fraction and decreasing mmt/ppoa mass ratio. the nucleation density of plla increases and the spherulite size decreases significantly in the presence of nmmt. epitaxy is the possible mechanism to explain the nucleation phenomenon of the plla/nmmt system. moreover, the tensile test results show that nmmt has a strengthening effect on the amorphous plla. through a short time annealing procedure, the mechanical properties such as the tensile modulus and storage modulus of plla are improved by the addition of nmmt.
收录类别	SCI
语种	英语
WOS记录号	WOS:000334737400012
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/57227]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Zhao, Hongwei,Bian, Yijie,Xu, Mingzhi,et al. Enhancing the crystallization of poly(L-lactide) using a montmorillonitic substrate favoring nucleation[J]. crystengcomm,2014,16(19):3896-3905.
APA	Zhao, Hongwei.,Bian, Yijie.,Xu, Mingzhi.,Han,Changyu.,Li,Yi.,...&Dong,Lisong.(2014).Enhancing the crystallization of poly(L-lactide) using a montmorillonitic substrate favoring nucleation.crystengcomm,16(19),3896-3905.
MLA	Zhao, Hongwei,et al."Enhancing the crystallization of poly(L-lactide) using a montmorillonitic substrate favoring nucleation".crystengcomm 16.19(2014):3896-3905.