Effect of dicumyl peroxide and chain extender on mechanical properties and molecular weight of Polylactic acid/Polybutylene adipate terephthalate blends

Conference proceedings article

Authors/Editors

Strategic Research Themes

Innovative Materials, Manufacturing and Construction (Strategic Research Themes)

Publication Details

Author list: Sarit Sukwattanajaroon, Teerasak Markpin, Ekachai Wimolmala, Narongrit Sombatsompop

Publication year: 2022

Title of series: การประชุมทางวิชาการของมหาวิทยาลัยเกษตรศาสตร์ ครั้งที่ 60

Start page: 405

End page: 412

Number of pages: 8

Languages: Thai (TH)

Abstract

This study aimed to investigate the effects of dicumyl peroxide ( DCP) and chain extender on
mechanical properties and molecular weight of polylactic acid (PLA)/polybutylene adipate terephthalate (PBAT) blends. The PLA/PBAT blends ratio were varied at 100/0, 80/20 and 60/40 by weight percent. The results showed that the addition of PBAT in PLA was found to decrease the tensile modulus and tensile strength of PLA/PBAT blends, but increase the elongation at break, tensile toughness and impact property of PLA/PBAT blends. The addition of DCP on PLA/PBAT blends was found to increase the molecular weight of PLA/PBAT blends, but decrease the tensile and impact properties. The addition of chain extender on PLA/PBAT blendswas found to increase the molecular weight, elongation at break, tensile toughness and impact property of PLA/PBAT blends, but decrease the tensile modulus and tensile strength of PLA/PBAT blends.

Keywords: Chain extender, Dicumyl peroxide, Polylactic acid, Polymer blends

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