| 摘要 |
The present invention relates to biodegradable PHA copolymers comprising at least two randomly repeating monomer units. The present invention further relates to a plastic article comprising a biodegradable copolymer, wherein t he biodegradable copolymer comprises at least two randomly repeating monomer units (RRMU) wherein the first RRMU has structure (I) wherein R1 is H, or C1 or C2 alkyl, and n is 1 or 2; the second RRMU has structure (II) and wherein at least 50 % of the RRMUs have the structue of the first RRMU. The present invention further relates to an absorbent article comprising a liquid previo us topsheet, a liquid impervious backsheet comprising a film comprising a PHA o f the present invention and an absorbent core positioned between the topsheet and the backsheet.
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