การปรับปรุงสมบัติและการลดต้นทุนการเตรียมไม้ระแนงเทียมจากพอลิเมอร์เบลนด์ระหว่างยางธรรมชาติรีเคลมกับเอทิลีนไวนิลอะซิเตท

Abstract

Thermoplastic natural rubber (TPNR) based on reclaimed natural rubber (RR)/ethylene-vinyl acetate (EVA) for low cost artificial slatted wood was successfully prepared by using melt mixing technique. The optimum mixing conditions were using temperature of 140 °C for 15 min with rotor speed of 30 rpm. This was confirmed by mechanical and morphological (i.e., modified from Scherer equation's analysis) properties. Furthermore, the properties of the blend can be enhanced by using all compatibilizers (ENR-25, ENR-50 and phenolic compound modified EVA.). Addition of phenolic compound modified EVA (Ph-EVA) 3 phr as a compatibilizer in the blends provided suitable properties (i.e., mechanical and thermal properties). The artificial slatted wood prepared based on optimum condition from this work gave better performance in term of anti-microorganisms and water resistant properties than those of real and commercial artificial slatted woods. The obtained knowledge from this study is benefits to apply as the low cost artificial slatted wood for goat or livestock shed's flooring applications.