Studies on morphology and crystallization of polypropylene/polyamide 12 blends

	Studies on morphology and crystallization of polypropylene/polyamide 12 blends
	Tang T ; Lei ZL ; Huang BT
刊名	polymer
	1996
卷号	37 期号:15 页码:3219-3226
关键词	FRACTIONATED CRYSTALLIZATION POLYAMIDE BLENDS COMPATIBILIZATION POLYMER COPOLYMERS
ISSN号	0032-3861
通讯作者	tang t
中文摘要	scanning electron microscopy (sem) and an image analyser are used to study morphologies of the fractured surface, etched by hot phenol, of polypropylene/maleated polypropylene/polyamide 12 pp/pp-ma/pa12) = 65/10/25 blend and pp-ma/pa12 = 75/25 blend. the particle dimension and its distribution of pa12 dispersed phase in these blends are much lower and narrower than that of the pp/pa12. blends. especially, most of the particles in the pp-ma/pa12 = 75/25 blend are smaller than 0.1 mu m. the effect of the morphology of pp/pa12 blends on their crystallization behaviour is studied using differential scanning calorimetry and sem. pa12 dispersed phase coarsens during annealing in the pp/pp-ma/pa12 = 65/10/25 blend. the mechanism of coarsening of the pa12 dispersed phase is a coalescence process. the intense mixing between the pp component and the pa12 component through reaction of pp-ma and pa12 leads to a change of dynamic mechanical behaviour of the components. a separation method is used to separate the polyolefin parts (precipitated from hot phenol), from pa12 parts (hot phenol filtrate). of pp/pp-ma/pa12 = 65/10/25 blend, infra-red measurements and elementary analysis show that the precipitate has a lower pa12 content than the feed, whereas the filtrate has a higher pa12 content. from pp-ma/pa12 = 75/25 blend, pa12 contents in the precipitate and the filtrate are the same as in the feed. this implies that all pa12 has reacted with all pp-ma in the latter case while not in the former case. using the method of interface exposure, interfacial reaction of pp-ma with pa12 is studied by x-ray photoelectron spectrometry (x.p.s.). copyright (c) 1996 elsevier science ltd.
收录类别	SCI收录期刊论文
语种	英语
公开日期	2010-12-22 ; 2011-06-09
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/25351]
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	Tang T,Lei ZL,Huang BT. Studies on morphology and crystallization of polypropylene/polyamide 12 blends[J]. polymer,1996,37(15):3219-3226.
APA	Tang T,Lei ZL,&Huang BT.(1996).Studies on morphology and crystallization of polypropylene/polyamide 12 blends.polymer,37(15),3219-3226.
MLA	Tang T,et al."Studies on morphology and crystallization of polypropylene/polyamide 12 blends".polymer 37.15(1996):3219-3226.