Rheological Properties of Poly(lactic acid) Modified by Electron Beam Irradiation

Title
Rheological Properties of Poly(lactic acid) Modified by Electron Beam Irradiation
Author(s)
신부영김봉식
Keywords
POLYETHYLENE TEREPHTHALATE RESINS; POLY(L-LACTIC ACID); THERMAL-PROPERTIES; CROSS-LINKING; POLYPROPYLENE; DEGRADATION; BLENDS
Issue Date
201009
Publisher
POLYMER SOC KOREA
Citation
POLYMER-KOREA, v.34, no.5, pp.485 - 489
Abstract
Poly (lactic acid) (PLA) has been modified by electron radiation in the presence of 5 phr glycidyl methacrylate (GMA) to enhance the melt strength of PLA. The modified PLA was prepared he varying the dose of irradiation and was characterized by observing the thermal properties, the melt viscoelastic properties and the gel fraction. The irradiated PLA with 300 kGy in the presence of 5 phr GMA showed drastically improved complex viscosity and storage modulus properties: a complex viscosity of about 210 times higher and a storage modulus of 14500 times higher than those of virgin 01,A when measured at a frequency of 0.1 rad/s. Gel fraction study revealed that a branching reaction was more dominant than a crosslinking reaction when the PLA was irradiated with less than 200 kGy.
URI
http://hdl.handle.net/YU.REPOSITORY/23679
ISSN
0379-153X
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공과대학 > 화학공학부 > Articles
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