Reactive Extrusion of Polyamide 6 Using a Novel Chain Extender
   
Yazarlar (2)
Dr. Öğr. Üyesi Başak TUNA Kırşehir Ahi Evran Üniversitesi, Türkiye
Hadj Benkreira University Of Bradford
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Polymer Engineering and Science (Q3)
Dergi ISSN 0032-3888 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce Basım Tarihi 03-2019
Cilt / Sayı / Sayfa 59 / 0 / – DOI 10.1002/pen.24944
Makale Linki https://doi.org/10.1002/pen.24944
Özet
Polyamide 6 (PA6) is an important engineering thermoplastic, very widely used but prone to thermal degradation during extrusion at temperature not far from its melt temperature (220°C). Typically, and as measured in this study, PA6 extruded at temperature of 300°C shows a 40% decrease in tensile modulus compared with non‐extruded PA6. To rebuild PA6 molecular weight, the easiest and cheapest method is to use an appropriate chain extender. Many chain extenders have been used in the past but they are essentially suited to nucleophile induced degradation, targeting split PA6 chains carboxyl COOH and amine NH2 end groups. What have been lacking are effective chain extenders for thermally only induced degradation, i.e. for the practical cases where the PA6 is thoroughly dried before extrusion. For such a case, the degradation reaction mechanism dictates that the solution is to develop chain extenders …
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