Untitled

Abstract

To improve the hydrophilic property of natural rubber latex (NR), various methods for combining hydrophilic polymers; ie, mechanical blending (MB), semi-latex interpenetrating polymer network (semi-LIPN), and latex interpenetrating polymer network (LIPN), were studied. Polyacrylamide (PAM) and phthalated chitosan (PhChi) were chosen as hydrophilic polymers for this study. The desired membranes must possess sufficient tensile strength and high water sorption selectivity. The potential membrane usable for pervaporation dehydration of aqueous azeotrope ethanol was the LIPN type prepared from prevulcanized latex and PAM with 60/40 ratio and with 1% EGDM.

Preparation of environment‐friendly hydrophilic rubber from natural rubber grafted with sodium acrylate by reactive melt mixing

“…Most natural hydrophilic polymers are proteins (gelatin, albumin, lecithin, and legumin) and polysaccharides (starch, alginate, dextran, and chitosan). Several types of synthetic hydrophilic polymers, including poly(ethylene glycol), [ 1 ] polyvinyl alcohol, polyacrylamide, [ 2 ] and poly(acrylic acid), plus carboxylated rubber species, such as carboxylic styrene‐butadiene rubber, carboxylic acrylonitrile butadiene rubber, and carboxylic butyl rubber, [ 3 ] have been used. Although bio‐based rubbers or natural rubber (NR) from plants are hydrophobic polymers, it is often appropriate to modify their structure so as to increase their hydrophilic property because they are an environmentally friendly material.…”

Preliminary Investigation of Hydrophilic Polymer (HP)/Epoxidised Natural Rubber (ENR25) Blends Film Formation for Rubber Glove Donning Coating Application

“…Many applications of polymer blends, particularly as polymer latex are found in adhesion, coating, composite and colloidal stability in aqueous dispersion technology. Moreover, extensive studies have been carried out in polymer blend area [1][2][3] especially in film formation focusing on the morphology and properties of film.…”

Preparation and Properties of Interpenetrating Polymer Network Films from Prevulcanized Natural Rubber Latex/Chitosan Blends

“…Chitosan(CS), a cationic biopolymer and polysaccharide of natural origin, has many useful features such as nontoxicity, biocompatibility, good mechanical strength and antimicrobial properties, and can be used in many areas from health care to agriculture and dyes for fabrics. Blending of CS or CS derivatives with other polymers for property improvement, has become a field of intensive research interests [10][11][12][13][14][15][16][17]. In which, Klamklang and coworkers [12] prepared pervaporation membranes by blending concentrated natural rubber latex or prevulcanized latex with phathalated CS; Rao V. and Johns J.…”

“…Blending of CS or CS derivatives with other polymers for property improvement, has become a field of intensive research interests [10][11][12][13][14][15][16][17]. In which, Klamklang and coworkers [12] prepared pervaporation membranes by blending concentrated natural rubber latex or prevulcanized latex with phathalated CS; Rao V. and Johns J. [13][14][15][16] obtained NR latex/CS blends by mixing NR latex with CS in distilled water containing 2% (v/v) acetic acid, and moulded using an electrically heated hydraulic press machine at 140˚C and a pressure of 10 ton press for certain time.…”