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Processing Characteristics of Nylon 6 by Controlling the Melt Viscosity  

Kim Hyogap (Department of Polymer Science and Engineering, Dankook University)
Kim Jun Kyung (Polymer Hybrid Research Center, Korea Institute of Science and Technology)
Lim Soonho (Polymer Hybrid Research Center, Korea Institute of Science and Technology)
Lee Kunwong (Polymer Hybrid Research Center, Korea Institute of Science and Technology)
Park Min (Polymer Hybrid Research Center, Korea Institute of Science and Technology)
Kang Ho-Jong (Department of Polymer Science and Engineering, Dankook University)
Publication Information
Polymer(Korea) / v.29, no.6, 2005 , pp. 565-570 More about this Journal
Abstract
Melt processing characteristics of nylon 6 (N6) has been investigated by controlling the melt viscosity in melt impregnation process. Calcium stearate (CaST) was introduced as a lubricant for N6 and the melt viscosity of N6 decreased with adding only 1 wt$\%$ of CaST. In addition, reactive blending with polycaprolactone (PCL) was carried out by lowering the melt viscosity in N6. It was found that the melt viscosity of N6 could be controlled and further melt viscosity drop could be obtained by applying phenyl phosphite (PP) and diphenyl phosphite (DPP) to enhance the transesterification between N6 and PCL. Our approaches show that the melt viscosity of N6 could be reduced without loss of thermal stability which is the critical problem in high temperature melt impregnation process of N6.
Keywords
Nylon 6; polycaprolacton; blends; calcium stearate; phosphite;
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