Control of molecular weight in tetrahydrofuran polymerization initiated by heteropolyacid
β Scribed by Yu Chen; Guangli Zhang; Hongzhi Zhang
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 124 KB
- Volume
- 82
- Category
- Article
- ISSN
- 0021-8995
- DOI
- 10.1002/app.1848
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π SIMILAR VOLUMES
The reaction behavior of water and low molecular weight glycol in tetrahydrofuran polymerization initiated by H 3 PW 12 O 40 in the presence of ethylene oxide has been studied. A lot of water was used in the hydrolysis reaction of ethylene oxide at the early stage of the polymerization and transform
BPO concentration of growing polymer chain polystyrene molecular weight ' Calculated by eq. (3) on the basis of [MTEMPOIo instead of [PI.
Propylene polymerization was investigated with a sequential addition of Ziegler-Natta and metallocene catalysts. From the fact that the molecular weights of polypropylene (PP) produced with Ziegler-Natta and with metallocene catalysts differ, it was possible to control the molecular weight distribut