Semicrystalline thermoplastic elastomeric polyolefins: Advances through catalyst development and macromolecular design
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چکیده
منابع مشابه
Semicrystalline thermoplastic elastomeric polyolefins: Advances through catalyst development and macromolecular design.
We report the design, synthesis, morphology, phase behavior, and mechanical properties of semicrystalline, polyolefin-based block copolymers. By using living, stereoselective insertion polymerization catalysts, syndiotactic polypropylene-block-poly(ethylene-co-propylene)-block-syndiotactic polypropylene and isotactic polypropylene-block-regioirregular polypropylene-block-isotactic polypropylene...
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Seismic hazards remained as a challenge to engineers over ages. In order to reduce loss of life and damage to property due to earthquake, several techniques have been developed among which Seismic Isolation technique using Elastomeric Isolators has gained high acceptance and becoming popular all over the world, due to its simplicity, reliability and overall cost effectiveness. Seismic Isolation...
متن کاملForce decay evaluation of thermoplastic and thermoset elastomeric chains: A mechanical design comparison.
OBJECTIVES To compare the following over a period of 8 weeks: (1) force decay between thermoplastic (TP) and thermoset (TS) elastomeric chains; (2) force decay between light (200-g) and heavy (350-g) initial forces; and (3) force decay between direct chains and chain loops (stretched from one pin around the second pin and back to the first pin). MATERIALS AND METHODS TP and TS chains were obt...
متن کاملOne-pot synthesis of semicrystalline/amorphous multiblock copolymers via divinyl-terminated telechelic polyolefins.
A simple, one-pot approach to synthesize random semicrystalline/amorphous multiblock copolymers (12-17 blocks per chain on average) is demonstrated that takes advantage of acyclic diene metathesis (ADMET) polymerization of α,ω-divinyl-terminated telechelic polyolefins. This synthetic approach offers a generic, viable and economical route to polyolefin-based multiblock copolymers and may be exte...
متن کاملRecent Advances of the Non - thermal Plasma Technology for Catalyst Development and Design
Format Title: Authors: (Please underline the presenting author and put * by the faculty adviser) Affliation: Division: Analytical, biochem, inorganic, organic, or physical, etc. Email: (of the presenting author) Category: oral (undergraduate or graduate) or poster (community college or High school) Abstract (up to 150 words)up to 150 words)
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2006
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.0602894103