<Li> A graft polymer molecule is a branched polymer molecule in which one or more of the side chains are different, structurally or configurationally, from the main chain . </Li> <Li> A star - shaped polymer molecule is a branched polymer molecule in which a single branch point gives rise to multiple linear chains or arms . If the arms are identical the star polymer molecule is said to be regular . If adjacent arms are composed of different repeating subunits, the star polymer molecule is said to be variegated . </Li> <Li> A comb polymer molecule consists of a main chain with two or more three - way branch points and linear side chains . If the arms are identical the comb polymer molecule is said to be regular . </Li> <Li> A brush polymer molecule consists of a main chain with linear, unbranched side chains and where one or more of the branch points has four - way functionality or larger . </Li>

A combs polymer has what kind of features
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