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Title: Biodegradable High-Molecular-Weight Poly(pentylene adipate-co-terephthalate): Synthesis, Thermo-Mechanical Properties, Microstructures, and Biodegradation

Journal Article · · ACS Sustainable Chemistry & Engineering
ORCiD logo [1];  [2]; ORCiD logo [3];  [4]; ORCiD logo [2];  [5]
  1. Univ. of Massachusetts, Amherst, MA (United States); University of Massachusetts Amherst Department of Chemical Engineering
  2. Univ. of Wisconsin, Madison, WI (United States)
  3. Argonne National Laboratory (ANL), Argonne, IL (United States); Northwestern Argonne Institute of Science & Engineering, Evanston, IL (United States)
  4. Argonne National Laboratory (ANL), Argonne, IL (United States)
  5. Univ. of Massachusetts, Amherst, MA (United States)

Poly(pentylene adipate-co-terephthalate) (PPAT) is a promising biobased and biodegradable polymer that can replace polyethylene in flexible packaging films where biodegradability is desired. High-molecular-weight (100K–145 KDa) aliphatic–aromatic polyester PPAT was successfully synthesized, and the effects of reaction conditions on molecular weight were reported. PPAT polyesters were characterized for polymer compositions, number-average unit length, thermal transitions, and rheological properties. PPAT compression-molded films were characterized for crystallinity and tensile properties to correlate micro- and macroproperties. PPAT compression-molded films exhibited up to a 76% higher tensile modulus than compression-molded films from poly(butylene adipate-co-terephthalate) (PBAT), making PPAT films potentially comparable with compression-molded films from linear low-density polyethylene (LLDPE). Finally, PPAT is biodegradable in soil and freshwater environments with estimated 90% biodegradation times of 504–580 and 604–845 days, respectively, while PBAT takes 971 days in soil and 395 days in freshwater.

Research Organization:
Univ. of Wisconsin, Madison, WI (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Bioenergy Technologies Office (BETO)
Grant/Contract Number:
EE0009305; AC02-06CH11357
OSTI ID:
2283539
Journal Information:
ACS Sustainable Chemistry & Engineering, Journal Name: ACS Sustainable Chemistry & Engineering Journal Issue: 38 Vol. 11; ISSN 2168-0485
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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