ICCAS OpenIR
Influence of preparation methods on the structures and properties for the blends between polyamide 6co6T and polyamide 6: Melt-mixing and in-situ blending
Wang, Xiaochun1,2; Zheng, Qiang1; Du, Libo3; Yang, Guisheng2,3
2008-01-15
Source PublicationJOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
ISSN0887-6266
Volume46Issue:2Pages:201-211
AbstractTwo blends between polyamide 6 (PA6) and Polyamide 6co6T (PA6co6T, a random copolymer between polyamide 6 and polyamide 6T) were fabricated by melt-mixing on a twin-screw extruder and the subsequent injection molding, or through the in-situ polymerization of F-caprolactam in the presence of PA6co6T. As far as the former method is concerned, there exist an obvious decline of toughness and a slight increase in strength and modulus; however, for the latter, there appear a remarkable improvement in toughness and a simultaneous moderate increase in strength and modulus. A series of characterizations were carried out including scanning electron microscopy, wide-angle X-ray diffraction, polarized optical microscopy, differential scanning calorimetry, dynamic mechanical analysis, and Fourier transform infrared spectrometry. It is found that both blends exhibit single glass transition on DMA tan delta curves. However, contrary to that of the melt-mixed blends, the glass transition temperature (T-g) of the in-situ ones decreases with increasing PA6co6T content. It is suggested that different mixing levels are the main reasons. Moreover, the addition of PA6co6T containing linear rigid segments conducts remarkable refinement of spherulites for the blends. Significantly different changes in the crystallographic form, spherulite size, crystalline content and perfection due to the introduction of PA6co6T for the two blends are ascribed to their varied thermomechanical histories and the presence of interchange reaction only for the in-situ blends. On the basis of the characterizations of the microstructures, the different trends of changes in the mechanical properties with the addition of PA6co6T for the two fabrication methods are discussed. (C) 2007 Wiley Periodicals, Inc.
KeywordIn-situ Polymerization Melt-mixing Blends Mechanical Properties Polyamide
DOI10.1002/polb.21355
Indexed BySCI
Language英语
WOS IDWOS:000252473100009
PublisherJOHN WILEY & SONS INC
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/64518
Collection中国科学院化学研究所
Corresponding AuthorZheng, Qiang
Affiliation1.Zhejiang Univ, Dept Polymer Sci & Engn, Hangzhou 310027, Peoples R China
2.Shanghai Genius Adv Mat Co Ltd, Shanghai 201109, Peoples R China
3.Chinese Acad Sci, Inst Chem, Key Lab Engn Plast, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Wang, Xiaochun,Zheng, Qiang,Du, Libo,et al. Influence of preparation methods on the structures and properties for the blends between polyamide 6co6T and polyamide 6: Melt-mixing and in-situ blending[J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,2008,46(2):201-211.
APA Wang, Xiaochun,Zheng, Qiang,Du, Libo,&Yang, Guisheng.(2008).Influence of preparation methods on the structures and properties for the blends between polyamide 6co6T and polyamide 6: Melt-mixing and in-situ blending.JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS,46(2),201-211.
MLA Wang, Xiaochun,et al."Influence of preparation methods on the structures and properties for the blends between polyamide 6co6T and polyamide 6: Melt-mixing and in-situ blending".JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 46.2(2008):201-211.
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