화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2018년 봄 (04/04 ~ 04/06, 대전컨벤션센터)
권호 43권 1호
발표분야 고분자구조 및 물성
제목 Block Copolymers of Polyethylene and Hydrogenated Poly(x-norbornene)s: Melt Miscibility and Solid-State Properties
초록 Several hydrogenated substituted polynorbornenes show substantial miscibility with polyethylene (PE), with symmetric block copolymers forming homogeneous melts even above 100 kg/mol. The polymers are synthesized by living ring-opening metathesis polymerization of cyclopentene and a 5-substituted norbornene, then hydrogenated. We characterize the interaction energy density X (proportional to the Flory χ) via the order-disorder transition temperature. Though these are all-hydrocarbon polymers, they do not quantitatively obey regular mixing, but can be described empirically by X = (Δγ)1.5, where γ is a pure-component quantity operationally analogous to a solubility parameter. Incorporating short blocks of hydrogenated poly(norbornylnorbornene), with Tg = 115 °C, effectively doubles the modulus and yield strength of PE, while retaining an easily-processed single-phase melt.
저자 Richard A. Register
소속 Princeton Univ.
키워드 -
E-Mail register@princeton.edu