Document Detail


Control of polymer topology by chain-walking catalysts.
MedLine Citation:
PMID:  12203338     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Chain-walking catalysts are demonstrated to control the branching topology of polyethylene by tuning the competition between monomer insertion and chain isomerization (walking). The topology of the polyethylene was controlled from linear with moderate branching to hyperbranched to dendritic. Although overall branching number and distribution of short chain branching are relatively constant, the topology of the polyethylene changes from linear polyethylene with moderate branches at high ethylene pressures to a dendritic polyethylene at low pressures. This provides a straightforward one-pot process for making polymers with a full range of tunable topologies.
Authors:
Zhibin Guan
Related Documents :
8442838 - Intraarticular capacity and compliance of stiff and normal elbows.
21653598 - Left ventricular systolic performance is improved in elite athletes.
15377718 - Can static plantar pressures of prepubertal children be predicted by inked footprints?
6960158 - A clinical study of the number of occlusal tooth contacts in the intercuspal position a...
8032358 - Conscious minipig model for evaluating the lower urinary tract.
23758558 - Drivers of surface ocean mercury concentrations and air-sea exchange in the west atlant...
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; Review    
Journal Detail:
Title:  Chemistry (Weinheim an der Bergstrasse, Germany)     Volume:  8     ISSN:  0947-6539     ISO Abbreviation:  Chemistry     Publication Date:  2002 Jul 
Date Detail:
Created Date:  2002-08-30     Completed Date:  2003-08-08     Revised Date:  2009-08-04    
Medline Journal Info:
Nlm Unique ID:  9513783     Medline TA:  Chemistry     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  3086-92     Citation Subset:  IM    
Affiliation:
Department of Chemistry, 516 Rowland Hall, University of California, Irvine, California 92697-2025, USA. zguan@uci.edu
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Catalysis
Combinatorial Chemistry Techniques / methods*
Isomerism
Polyenes / chemical synthesis
Polymers / chemical synthesis*
Transition Elements / chemistry
Chemical
Reg. No./Substance:
0/Polyenes; 0/Polymers; 0/Transition Elements; 83136-87-2/PL 732

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Tag-reporter and resin capture--release strategy in oligosaccharide synthesis.
Next Document:  Ta97Te60: a crystalline approximant of a tantalum telluride quasicrystal with twelvefold rotational ...