Preparation and Characterization of Poly(2-Hydroxyethyl Methacrylate) and Castor Oil Based Uralkyds Interpenetrating Polymer Networks

Abstract

Interpenetrating polymer networks (IPNs) of poly[2-hydroxyethylmethacrylate] and uralkyd prepolymer were synthesized using benzoyl peroxide as initiator, polyethylene glycol as chain extender, and N,N-methylene bis acrylamide as crosslinker by sequential polymerization method. The concentration of uralkyd (UA) prepolymer and poly[2-hydroxyethylmethacrylate] (PHEMA) were varied and their effects on chemical, mechanical, thermal, and morphological properties of IPNs were investigated. The IPNs glass-transition temperatures increase with increasing PHEMA concentrations. Tensile strength, and shore A hardness increases with increasing concentration of PHEMA while sacrificing percent elongation. Almost all IPNs have shown similar chemical resistance irrespective of composition. Thermo gravimetric analysis (TGA) indicated that increase in PHEMA concentration increases thermal stability of IPNs. Morphological analysis reveals that IPNs reveals heterogeneous and compact morphologies with distinct microphase separation.

Polyurethane/Epoxy Interpenetrating Polymer Network

“…Generally, IPNs show excellent engineering properties due to synergetic effect induced by the compatibility of individual components in PU/epoxy IPNs [9]. Polyurethane/epoxy IPNs have been widely applied to foams, coatings, fibers, leather, and other applications [10]. To broaden the applications of PU/epoxy IPNs, these network structures have been modified using various filler structures.…”

POLY (N-Vinylcarbazole) AND (Α-Polmethylstyrene) BASED SEMI INTERPENETRATING POLYMER NETWORK: SYNTHESIS AND CHARACTERIZATION

“…Peerasak et al [7] synthesized styrene and 4vinyl pyridine with poly(ethylene tetraphthalate) using benzoyl peroxide. Prashantha et al [8] formed polyurethane epoxy IPNs and widely applied to fibers, foams, coating, leathers and other applications. Kyriakos et al [9] described versatile synthetic methodology that leads to the generation of nonconjugated 3D luminescent semi interpenetrating aliphatic network.…”