연구논문 초록집

초록 검색

세션명 고분자구조 및 물성: 다성분계 고분자의 미세구조 및 물성
발표장 203호
논문코드 1L7-5
발표일 2019-10-10
발표시간 15:30-15:55
논문제목 Understanding How to Tune Microstructure and Polymer Properties via Reaction Conditions for Low-Density Polyethylene
발표자 Kristina Pflug
발표자 소속 Institute for Technical and Macromolecular Engineering, University of Hamburg
저자 Kristina Pflug, Markus Busch1,†
소속 Institute for Technical and Macromolecular Engineering, University of Hamburg; 1Institute for Technical and Macromolecular Engineering, Technical University of Darmstadt
논문초록 Even chemically simple polymer structures, like polyethylene, can result is diverse properties. The special feature of PE is its branching structure, which exhibits short- and long-chain branches (SCBs and LCBs), which have a drastic effect on polymer properties. A multi-scale modelling approach was developed to understand this connection. A kinetic model determines concentration profiles and average polymer properties. Then, a hybrid Monte-Carlo model gives individual branching structures. Those are used to predict flow properties (shear/extensional rheology). The strategy was successfully validated via comprehensive analytics for a mini plant-scale autoclave as well as an industrial-scale tubular reactor. Depicting the formation of randomly distributed LCBs on complex polymer architectures and predicting their effect on properties was the biggest challenge. The new strategy poses a universal method to predict structure-property relationships only based on polymerization conditions.