Synthesis and curing of rod-like epoxies with alkoxy groups as flexible side chain
- Authors
- Choi, EJ; Seo, JC; Choi, BK; Lee, JK
- Issue Date
- Apr-2002
- Publisher
- SPRINGER-VERLAG
- Citation
- POLYMER BULLETIN, v.48, no.2, pp 111 - 118
- Pages
- 8
- Journal Title
- POLYMER BULLETIN
- Volume
- 48
- Number
- 2
- Start Page
- 111
- End Page
- 118
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/27044
- DOI
- 10.1007/s00289-002-0026-y
- ISSN
- 0170-0839
1436-2449
- Abstract
- A series of aromatic diepoxides consisting of rigid ester unit with different lengths of flexible alkoxy side groups (R = H, OCH3, OC3H7, and OC8H17) were synthesized, and their thermal and cure behavior with aromatic diamine were investigated by using a DSC. The values of melting temperatures for the epoxy monomers ranged from 65 to 221degreesC depending upon the length of side groups. Cure kinetics of an epoxy/4,4'-diaminodiphenylmethane (DDM) system with two different side groups (R = OC3H7 and OC8H17) forming homogeneous mixture was examined using a multi-temperature scan method, developed by Ozawa and Kissinger, in order to determine the activation energy (E) and the frequency factor (A). The epoxy monomer having longer side group showed smaller E and larger A, indicating that the introduction of the long flexible side group could accelerate the cure reaction of rod-like epoxy.
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