생분해성 PLA-PHA 폴리머 블로운 압출 가공 특성
Biodegradable PLA-PHA Polymer Blown Extrusion Processing Properties
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
팬데믹 이후, 배송문화가 급증하면서 일회용품 및 포장재에 대한 글로벌 규제가 강화되고 있다. 포장재 제조과 정에서 다양한 화학 첨가제와 PVC(polyvinyl chloride) 가소제 사용이 수질오염 및 미세플라스틱의 원인으로 확인되면서 생분해성 포장재 개발이 중요하다. 석유계 생분해성 소재인 PBAT(polybutylene adipate terephthalate)는 PLA(폴리유산)와 배합할 경우, 낮은 인장강도와 높은 불투명도로 식품 및 의료기기 포장 적용이 제한적이다. 그러나 PHA(polyhydroxyalkanoate)가 첨가된 식물계 PLA의 복합재는 블로운 압출가공성이 우수하며, 인장강도 (Mpa) 32% 향상되고, 투명도는 80%이상 개선되었다. 생분해성 배합 비율변화에 따라, 복합재료의 인장강도가 170%이상 향상되는 비교 연구도 진행하였다. PHA를 첨가한 복합재료는 화이트 바이오플라스틱으로 탄소저감효과가 커 지속가능한 미래세대를 위한 소재로 활용될 수 있을 것으로 기대된다.
Abstract
As delivery culture grows rapidly, global regulations on disposable products and packaging materials are being strengthened. The use of various chemical additives and polyvinyl chloride (PVC) plasticizers in the packaging material manufacturing process has been confirmed to cause water pollution and microplastics. Therefore, it is important to develop biodegradable packaging materials. When polybutylene adipate terephthalate (PBAT) is mixed with polybutylene adipate terephthalate (PLA), a biodegradable petroleum material, its applications in food and medical device packaging are limited owing to its low tensile strength and high opacity. However, the plant-based PLA composite material with added PHA exhibits excellent blown extrusion processability, improved tensile strength (MPa) by 32%, and improved transparency by more than 80%. Furthermore, in a comparative study, it was determined that the tensile strength of the composite material can be improved by 170% by changing the biodegradable mixing ratio. The composite material, which comprises PHA, is a white bioplastic known for its significant carbon reduction effect. It is expected to serve as a sustainable material for future generations.
참고문헌 (19)
- L. D. Paolo, "Carbon Footprint of Single-Use Plastic Items and Their Substitution", Journal Sustainability, 13(24) (2022)
- K. Virin, "CO2Emissions from Plastic Consumption Behaviors in Thailand", Sustainability, 15 (2023)[DOI]
- P. Hongdilokkul, "A study on properties of PLA", PBAT from blown Film process, 2015, pp.87, ~
- K. D. Phothisarattana, "Blown film extrusion of PBAT", TPS, Colloids Surf B Biointerfaces, pp.2022[DOI]
- J. D. Matthew, "Poly lactic Acid Cellulose Nanocomposite Films Comprised of Wood and Tunicate CNCs Modified with Tannic Acid and Octadecylamine", Polymers, 13(21) (2021)[DOI]
- S. Sandeep, "Preperation and Properties of Biodegradable Film Composites Using Modified Cellulose Fibre-Reinforced with PVA", ISRN Polymer Science (2012)[DOI]
- N. Mallegni, "Poly(lactic acid)(PLA)Based Tear Resistant and Biodegradable Flexible Films by Blown Film Extrusion", Materials, 11 (2018)
- Y. Jiang, "Super-Toughed PLA Blown Film with Enhanced Gas Barrier Property Avaliable for Packaging and Agricultural Applications", Materials(Basel), 12 (2019)[DOI]
- G. Z hao, "Biodegradable and transparent cellulose film prepared eco-friendly from durian rind for packaging application", Food Packaging and Shelf Life, 21 (2019)
- G. Maitlo, "Plastic Waste Recycling, Applications, and Future Prospects for a Sustainable Environment", Journal of Sustainability, 14(18) (2022)
- J. Junzhi, "Effects of adding methods and modification types of cellulose on the physicochemical properties of startch", PBAT blown films, 2022, pp.227(4), 1335~1343
- Tian Lan, "Influence of Blow-Up Ratio on Properties of CEllulose Packaging Film by Blow-Extrusion process", Advanced Materials Research, 380, pp.260~264 (2011)[DOI]
- F. Serra-Parareda, "Characterization of CaCO3 Filled Poly(lactic)Acid and Bio Polyethylene Materials for Building Applications", Polymers, 13(19), pp.571~578 (2021)
- P. Jariyasakoolroj, "Microstructural Analyses of Biaxially Oriented Polylactide", Modified Thermoplastic Starch Film with Drastic Improvement in Toughness, 2018, pp.304(9), ~
- S. Jie, "Effect of nanocrystalline cellulose on mechanical, thermal, and barrier properties of polylactic ancid blown composite film", Research article, 34(5) (2023)
- V. Sediarik, "Biodegradation of Blown Films Based on Poly(lactic acid)under Natural Conditions", Macromolecular Symposia, 272(1), pp.100~103 (2008)
- E. J. Park, "Effects of nucleating agents and plasticizers on the crytallinity and crystal structure of PLA(Poly Lactic Acid)", Journal of the Korea Academia-Industrial cooperation Society, 16(1) (2015)
- J. Sun, "Nanofiller Reinforced Biodegradable PLA", PHA Composites : Current Status and Future Trends, 2018, pp.10(5), ~
- F. Rivera, "Green-Based Nanocomposite Materials and Appllications", pp.207~234 (2023)