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acid acrylate addition polymerisation adhesives alcohol alkali cellulose alkyl amino-acid amorphous aqueous carbon catalyst cent chemical chloride compounds condensation polymerisation configuration containing copolymer copolymerise cross linking crystalline regions degradation degree of polymerisation derivatives dilute solutions double bond elastic elastomers equation esters ethylene fibres Flory formaldehyde formation fraction free radicals give glass temperature glycol heat high polymers high-molecular-weight hydrolysis hydroxyl groups increase initiator insoluble interchain involves ions isoprene lignin linear polymer liquid mechanism melting point merisation methacrylate method methyl methyl methacrylate mixture molecular weight monomer moulded obtained occur oxide oxygen phenolic plasticiser plastics plot poly polyamides polyesters polyethylene polymer chains polymer molecules polystyrene polytetrafluoroethylene polyvinyl acetate polyvinyl chloride presence pressure properties proteins ratio react reaction reactivity repeating units resins resistance rubber silicone sodium soluble solvent structure styrene sulphur synthetic temperature thermal tion unsaturated vinyl acetate viscosity vulcanisation X-ray