Studi kinetika reaksi curing resin epoksi dengan heksametilendiamin pada larutan non ideal
| Main Author: | Perpustakaan UGM, i-lib |
|---|---|
| Format: | Article NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2002
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/18662/ http://i-lib.ugm.ac.id/jurnal/download.php?dataId=1459 |
Daftar Isi:
- Curing reaction of diglycidyl ether of bisphenol A (DGEBA) with hexamethylenediamine (HMDA) is an addition reaction, forms polymer with a three-dimensional networks structure. This research studied the effect of temperature and initial concentration ratio HMDA:DGEBA upon rate constants. There were two rate constants: the rate constant of linear reaction (ks) and rate constant of branch reaction (k2). This research proposed Non-ideal model which considered structure and molecular weight of polymer. Experiment was carried out in a stirred batch reactor equipped with water bath. Sample was taken at certain time to determine the rest epoxy equivalent. DGEBA of 60 g was used. The effect of temperature was investigated at concentration ratio HMDA:DGEBA of 7 phr with temperature range 30V - 50V (5 V interval). The effect of concentration ratio HMDA:DGEBA was investigated at constant temperature 40V with concentration ratio range 4 phr � 16 phr ( 3 phr interval ). It is concluded that the curing reaction DGEBA with HMDA can be explained with the Non-ideal model. In addition, the Non-ideal model could predict the molecular weight distribution. The effect of temperature reaction and initial concentration ratio HMDA:DGEBA upon rate constants was expressed in overall equation.