Exponentially increased nucleation ability for poly(L-lactide) by adding acid-oxidized multiwalled carbon nanotubes with reduced aspect ratios

doi:10.1007/s11426-012-4753-0

CORC > 化学研究所 > 中国科学院化学研究所

	Exponentially increased nucleation ability for poly(L-lactide) by adding acid-oxidized multiwalled carbon nanotubes with reduced aspect ratios
	Zhong Yong 1; Zhang YaQiong 1; Yang JingJing 1; Li WenLin 1; Wang ZhiGang 1; Xu DongHua 2; Chen ShouYu 3; Ding YunSheng 3,4
刊名	SCIENCE CHINA-CHEMISTRY
	2013-02-01
卷号	56 期号:2 页码:181-194
关键词	Poly(L-lactide) Mwcnts Aspect Ratio Nucleation
ISSN号	1674-7291
DOI	10.1007/s11426-012-4753-0
英文摘要	Acid-oxidized multiwalled carbon nanotubes (A-MWCNTs) with a range of reduced aspect ratios (from about 11 to 5.8) were obtained by acid oxidization of MWCNTs in the mixture of HNO3 and H2SO4 for varying periods of 1, 3, 8 and 12 h, respectively. The aspect ratios and surface functionalization of A-MWCNTs were well characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and thermogravimetric analysis (TGA). Poly(L-lactide)/A-MWCNT composites containing 0.5 wt% A-MWCNTs with a range of reduced aspect ratios were prepared by solution cast. The effects of added A-MWCNTs on the isothermal crystallization kinetics of poly(L-lactide)/A-MWCNT composites were investigated by means of differential scanning calorimetry (DSC), rheology and polarized optical microscopy (POM). It is surprising to find that not only the addition of A-MWCNTs effectively increases the poly(L-lactide) (PLA) crystallization kinetics, but also the nucleation ability of A-MWCNTs for PLA crystallization exponentially increases with the reduced aspect ratio, that is to say, those with lower aspect ratios show much stronger nucleation ability for PLA crystallization than those with higher aspect ratios. The exponentially increased nucleation ability of A-MWCNTs with a range of reduced aspect ratios for PLA crystallization is disclosed.
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000314271900004
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/46267]
专题	中国科学院化学研究所
通讯作者	Wang ZhiGang
作者单位	1.Univ Sci & Technol China, CAS Key Lab Soft Matter Chem, Dept Polymer Sci & Engn, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 3.Hefei Univ Technol, Inst Polymer Mat & Chem Engn, Sch Chem Engn, Hefei 230009, Peoples R China 4.Anhui Key Lab Controllable Chem React & Mat Chem, Hefei 230009, Peoples R China
推荐引用方式 GB/T 7714	Zhong Yong,Zhang YaQiong,Yang JingJing,et al. Exponentially increased nucleation ability for poly(L-lactide) by adding acid-oxidized multiwalled carbon nanotubes with reduced aspect ratios[J]. SCIENCE CHINA-CHEMISTRY,2013,56(2):181-194.
APA	Zhong Yong.,Zhang YaQiong.,Yang JingJing.,Li WenLin.,Wang ZhiGang.,...&Ding YunSheng.(2013).Exponentially increased nucleation ability for poly(L-lactide) by adding acid-oxidized multiwalled carbon nanotubes with reduced aspect ratios.SCIENCE CHINA-CHEMISTRY,56(2),181-194.
MLA	Zhong Yong,et al."Exponentially increased nucleation ability for poly(L-lactide) by adding acid-oxidized multiwalled carbon nanotubes with reduced aspect ratios".SCIENCE CHINA-CHEMISTRY 56.2(2013):181-194.