## Abstract Longβchain branching polypropylene (LCBβPP) was achieved by reactive extrusion in the presence of bifunctional monomer [1,6βhexanediol diarylate (HDDA)] and peroxide of dicumyl peroxide (DCP). Influences of HDDA and DCP concentrations on the branching efficiency were comparatively evalu
Durable and rechargeable biocidal polypropylene polymers and fibers prepared by using reactive extrusion
β Scribed by Mohammad Reza Badrossamay; Gang Sun
- Book ID
- 102874001
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 506 KB
- Volume
- 89B
- Category
- Article
- ISSN
- 1552-4973
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β¦ Synopsis
Abstract
Incorporation of Nβhalamine precursor onto polypropylene was explored by using a reactive extrusion process. Several cyclic and acyclic halamine precursors were grafted onto polypropylene backbone through a melt free radical graft copolymerization. The structures and morphology of the grafted polymer were characterized with FTIR, and scanning electron microscope. Thermal properties of the polymers were evaluated by differential scanning calorimetry. The halogenated products of the corresponding grafted samples exhibited potent antimicrobial properties against Escherichia coli, and the antimicrobial properties were durable and regenerable. The relationship between effective surface contact and biocidal efficacy are further discussed. Β© 2008 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2009
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## Abstract The reactive extrusion of maleic anhydride grafted polypropylene (PPβgβMAH) with ethylenediamine (EDA) as coupling agent is carried out in a corotating twinβscrew extruder to produce long chain branched polypropylene (LCBPP). Part of PPβgβMAH is replaced by maleic anhydride grafted high