Structural Analysis of the End Groups and Substructures of Commercial Poly(ethylene terephthalate) by Multiple-WET <sup>1</sup>H/<sup>13</sup>C NMR

Structural Analysis of the End Groups and Substructures of Commercial Poly(ethylene terephthalate) by Multiple-WET <sup>1</sup>H/<sup>13</sup>C NMR