Preparation of HDPE/SEBS‐g‐MAH and its effect on mechanical properties of HDPE/wood flour composites

Abstract

In this article, high density polyethylene/ styrene-ethylene-butylene-styrene block copolymer blends (HDPE/SEBS) grafted by maleic anhydride (HDPE/SEBSg-MAH), which is an effective compatibilizer for HDPE/ wood flour composites was prepared by means of torque rheometer with different contents of maleic anhydride (MAH). The experimental results indicated that MAH indeed grafted on HDPE/SEBS by FTIR analysis and the torque increased with increasing the content of maleic anhydride and dicumyl peroxide (DCP). Styrene may increase the graft reaction rate of MAH and HDPE/SEBS. When HDPE/SEBS MAH was added to HDPE/wood flour composites, tensile strength and flexural strength of composites can reach 25.9 and 34.8 MPa in comparison of 16.5 and 23.8 MPa (without HDPE/SEBS-g-MAH), increasing by 157 and 146%, respectively. Due to incorporation of thermoplastic elastomer in HDPE/SEBS-g-MAH, the Notched Izod impact strength reached 5.08 kJ m À2 , increasing by 145% in comparison of system without compatibilizer. That HDPE/SEBS-g-MAH improved the compatibility was also conformed by dynamic mechanical measurement. Scanning electron micrographs provided evidence for strong adhesion between wood flour and HDPE matrix with addition of HDPE/SEBS-g-MAH.

Solvent-free preparation, characterization, and properties of SEBS–g–polycarbonate copolymers

“…[51] PS grafts were also synthesized by styrene radical polymerization onto irradiated PC from created radical sites. [52][53][54][55][56][57][58][59][60][61][62] SEBS-g-MAH is a preformed immiscible terpolymer, with PC, widely used in the field of compatibilization of styrenic polymers, polyolefins, and polyamides. But this terpolymer was never used to compatibilize PC/ PS blends.…”

Effect of maleic anhydride/vinyltrimethoxysilane‐co‐grafting polypropylene on the properties of wood‐flour/polypropylene composites by electron‐beam preirradiation

“…14,15 One of the most important types of compatibilizers is a polymer grafted with maleic anhydride (MAH) or acrylic ester, such as MAH-g-PP, [16][17][18] , MAH-g-PE, 19,20 or MAH-g-high-density PE/styreneethylene-butylene-styrene block copolymer blends. 21 We also reported the preparation of MAH/silicone-g-PE by the free-radical method. 22 The electron beam preirradiation technique is an important method for modifying the interface of the composites and for preparing grafting polymers.…”

Improvement of thermal inertia of styrene–ethylene/butylene–styrene (SEBS) polymers by addition of microencapsulated phase change materials (PCMs)

“…[26][27][28][29] Incluso, el uso potencial de la SEBS como matriz para materiales compuestos se ha estudiado. [30][31][32] Como compatibilizador el SEBS muestra propiedades interesantes debido a la naturaleza de su estructura, con restos polares (estireno) y restos no polares (etileno / butileno) y esto permite compatibilizar una amplia variedad de plásticos. [33][34][35] Recientemente, los fenómenos de almacenamiento de energía han atraído una mayor atención.…”