Bench-scale synthesis and characterization of biodegradable aliphatic–aromatic random copolymers with 1,4-cyclohexanedimethanol units for blown film applications = 생분해성 지방족-방향족 공중합체의 1,4-싸이클로헥센디메틸렌 모노머 도입에 따른 블로운 필름 특성 변화에 관한 연구

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The development of biodegradable packaging films can resolve environmental issues caused by plastic waste, but it still remains a great challenge to develop economically-feasible polymers that simultaneously balance robust mechanical properties, biodegradability and transparency. In this work, we describe the bench-scale synthesis (~1.5 kg) and blown film characterization of new biodegradable aliphatic–aromatic copolymers, poly(1,4-butylene-1,4-cyclohexanedimethylene carbonate-terephthalate)s (PBCCTs) with different molar ratios of two diol monomers, 1,4-cyclohexanedimethanol (CHDM) and 1,4-butandiol (BD), from 0:1 to 5:5 (CHDM:BD) to optimize the mechanical, optical, thermal properties, and biodegradability. The incorporation of CHDM units significantly impacted the thermal properties of the blown films from these copolymers; PBCCT films with 50 mol% CHDM content had a more amorphous and glassy character compared with the films with 0 mol% CHDM. And, PBCCT films with 30-50 % CHDM content exhibited superior mechanical properties (tear strength: 11.5 kgf /mm and tensile strength: 369 kgf/$cm^2$) and comparable transparency (haze: 16%) to those of non-degradable polyethylenes (PEs), the most commonly employed materials for packaging film applications. Taken together, the bench-scale synthesis of biodegradable polymers with suitable thermomechanical, optical, and permeability properties presented here showcases the potential of these materials as sustainable packaging materials.
Advisors
Kim, Bumjoonresearcher김범준researcher
Description
한국과학기술원 :생명화학공학과,
Publisher
한국과학기술원
Issue Date
2019
Identifier
325007
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 생명화학공학과, 2019.2,[v, 79 p. :]

Keywords

biodegradable▼ablown film▼apackaging applications▼adimethyl carbonate▼a1,4-cyclohexanedimethanol▼abench-scale synthesis; 생분해성▼a블론 필름▼a패키징▼a다이메틸카보네이트▼a1,4-사이클로헥센디메탄올▼a벤치규모 합성

URI
http://hdl.handle.net/10203/264838
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=842104&flag=dissertation
Appears in Collection
CBE-Theses_Ph.D.(박사논문)
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