出版社：Defence Scientific Information & Documentation Centre
摘要：The result of a study on the copolymerisation of methacrylate (MMA) with varying mol fractions of octyl methacrylate, decyl methacrylate (DMA), lauryl methacrylate (LMA) and stearyl methacrylate (SMA) by free radical polymerisation using benzoyl peroxide as the initiator are presented. It was anticipated that incorporation of alkyl methacrylate (AMA) having a long alkyl side chain in poly(methyl methadrylate) (PMMA) backbone may lead to an improvement in the toughness of the cast sheets. Such copolymers can be used for low temperature applications in defence. The glass transition temperature of the polymers determined using differential scanning calorimetry was found to decrease with increase in length of the alkyl side chain and the comonomer content. A significant increase in percentage elongation and decrease in tensile strength, modulus and per cent transmittance was observed on incorporation of AMA in PMMA backbone. In the copolymers of SMA and MMA, significant opacity was observed.
