Abstract
A series of cross-fractionated branched polyethylenes of M w about 18000 and branch contents from zero to 22 branches/1000 carbons have been studied. Both linear growth rates and bulk growth rates have been determined using optical methods. It is demonstrated that increased branching causes the regime I-regime II transition to translate to lower temperatures. This occurs through a greater reduction of the rate of secondary nucleation relative to the reduction that occurs in the rate of surface spreading. Bulk kinetic data can be used to define regimes in polyethylenes to within a few degrees but cannot be used to estimate rates of secondary nucleation and surface spreading or to determine fold surface free energies
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
