| 摘要 |
We disclose a monovinylarene/conjugated diene block copolymer, comprising: (i) a random (conjugated diene<SUB>x</SUB>/monovinylarene<SUB>y</SUB>)<SUB>m </SUB>block, wherein x is about 2.5 wt % to about 10 wt %, y is from about 90 wt % to about 97.5 wt %, and x+y is about 97.5 wt % to 100 wt %; and (ii) a (conjugated diene)<SUB>n </SUB>block; wherein n is from about 20 wt % to about 30 wt %, m is from about 70 wt % to about 80 wt %, and m+n is from about 90 wt % to 100 wt %. We also disclose a method of forming the block copolymer and a method for fabricating an article from the block copolymer. The block copolymer typically exhibits a T<SUB>g </SUB>at least about 10° C. less than the T<SUB>g </SUB>of a reference polymer differing only in that x is about 0 wt % and y is about 100 wt %.
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