New conception on the toughness of nylon 6/silica nanocomposite prepared via in situ polymerization

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	New conception on the toughness of nylon 6/silica nanocomposite prepared via in situ polymerization
	Ou, YC; Yang, F; Yu, ZZ
刊名	JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
	1998-04-15
卷号	36 期号:5 页码:789-795
关键词	In Situ Polymerization Nanocomposite Toughness Nylon 6 Silica
ISSN号	0887-6266
英文摘要	A novel method, in situ polymerization, was used for the preparation of nylon 6/silica nanocomposites, and the mechanical properties of the nanocomposites were examined. The results showed that the tensile strength, elongation at break, and impact strength of silica-modified nanocomposites exhibited a tendency of up and down with the silica content increasing, while those of silica-unmodified nanocomposites decreased gradually. It also exhibited that the mechanical properties of silica-modified nanocomposites have maximum values only when 5% silica particles were filled. Based on the relationship between impact strength of the nanocomposites and the matrix ligament thickness tau, a new criterion was proposed to explain the unique mechanical properties of nylon 6/silica nanocomposites. The nylon 6/silica nanocomposites can be toughened only when the matrix ligament thickness is less than tau(c) and greater than tau(a), where tau, is the matrix ligament thickness when silica particles begin to aggregate, and tau(c) is the critical matrix ligament thickness when silica particles begin to toughen the nylon 6 matrix. The matrix ligament thickness, tau, is not independent, which related with the volume fraction of the inorganic component because the diameter of inorganic particles remains constant during processing. According to the observation of Electron Scanning Microscope (SEM), the process of dispersion to aggregation of silica particles in the nylon 6 matrix with increasing of the silica content was observed, and this result strongly supported our proposal. (C) 1998 John Wiley & Sons, Inc.
语种	英语
出版者	JOHN WILEY & SONS INC
WOS记录号	WOS:000072195900006
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/74171]
专题	中国科学院化学研究所
通讯作者	Ou, YC
作者单位	Chinese Acad Sci, Inst Chem, State Key Lab Engn Plast, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Ou, YC,Yang, F,Yu, ZZ. New conception on the toughness of nylon 6/silica nanocomposite prepared via in situ polymerization[J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,1998,36(5):789-795.
APA	Ou, YC,Yang, F,&Yu, ZZ.(1998).New conception on the toughness of nylon 6/silica nanocomposite prepared via in situ polymerization.JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,36(5),789-795.
MLA	Ou, YC,et al."New conception on the toughness of nylon 6/silica nanocomposite prepared via in situ polymerization".JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 36.5(1998):789-795.