Abstract: A polymer, which is a composition of a battery, includes a polyester. The polyester is polymerized by at least two monomers, wherein each of the at least two monomers is selected from a group consisting of a carbonate ester and a polyol. The polyester can further include an end-capped polycarbonate ester, and the end-capped polycarbonate ester includes an inert group on an end thereof.

Abstract: A polymer has a degradability and includes a monomer. The monomer of the polymer includes a benzene derivative, a lactide and a caprolactone. A ratio of the benzene derivative in the polymer is smaller than a ratio of the lactide in the polymer. The ratio of the benzene derivative in the polymer is smaller than a ratio of the caprolactone in the polymer.

Abstract: A plasticizer, a plastic composition and a plastic product are provided. The plasticizer is an amino acid derivative and has a biodegradability, wherein the plasticizer includes a central structure and at least one side chain structure. The central structure is an aspartic acid, the at least one side chain structure includes a first side chain structure and a second side chain structure. The plasticizer has a structure represented by Formula (I), in which each of the symbols thereof is as defined in the specification.

Abstract: A plasticizer, a plastic composition and a plastic product are provided. The plasticizer composition and the plastic product include the plasticizer, and the plasticizer has a biodegradability. The plasticizer has a structure represented by Formula (I), in which each of the symbols thereof is as defined in the specification, and the plasticizer has a central structure.

Abstract: A plastic composition includes at least one plastic and at least one plasticizer. The plastic include a polylactic acid. The plasticizer includes an amide ester compound, and the amide ester compound has the biodegradability. The weight percentage of the plastic in the plastic composition is 85% to 99.99%, and the weight percentage of the plasticizer in the plastic composition is 0.01% to 15%.

Abstract: A polymer, which is a composition of a battery, is polymerized by a polymeric precursor, and the polymeric precursor includes at least two or at least three monomers. Each of the monomers is a lactone, a lactone cyclic ester or a carbonate ester. The polymer includes a polyester, and the polyester is a straight chain.