Nylon 6/66/11 Copolymer Used for Hot-Melt Adhesives: Synthesis and Properties

Authors: Jin, Xu-Dong¹; Hu, Guo-Sheng²; Yang, Yun-Feng¹; Zhou, Xiu-Miao¹; Wang, Biao-Bing¹

Source: Journal of Adhesion Science and Technology, Volume 23, Number 5, 2009 , pp. 779-785(7)

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Abstract:

A new copolyamide, nylon 6/66/11, used for hot-melt adhesives, was prepared by hydrolytic polymerization and melt polycondensation. Intrinsic viscosity, melting point, glass transition temperature, cold crystallization, thermogravimetry (TG) and adhesion strength of the resultant hot-melt adhesives were investigated. DSC thermograms of the copolyamide showed that both the melting point and glass transition (T_g) temperatures decreased as the molar fraction of aminoundecanoic acid increased. The T_g practically did not change as the mole fraction of aminoundecanoic acid increased from 60% to 80%, but cold crystallinity of the copolyamide decreased. The thermal gravimetric analysis indicated that the resultant copolyamide had a high thermal stability. The copolyamide had the best combination of properties when the molar fraction of aminoundecanoic acid was about 65%.

Keywords: COPOLYAMIDE 6/66/11; CRYSTALLINITY; MELTING POINT; THERMAL STABILITY; HOT-MELT ADHESIVE

Document Type: Research article

DOI: http://dx.doi.org/10.1163/156856108X396282

Affiliations: 1: Institute of Macromolecules and Bioengineering, North University of China, Taiyuan 030051, China 2: Institute of Macromolecules and Bioengineering, North University of China, Taiyuan 030051, China;, Email: huguosheng@nuc.edu.cn

Publication date: 2009-03-01