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Phase Behavior of Blends Containing Poly(resorcinol phthalate-block-carbonate) and Poly(ethylene terephthalate) (.pdf)
Polymer blends provide an efficient way of making new materials with improved properties. The miscibility of poly(resorcinol phthalate-block-carbonate)(RPC) and poly(ethylene terephthalate )(PET) blends is examined by differential scanning calorimetry and dynamical mechanical analysis. When
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Flouroplastics
), polychlorotrifluoroethylene (CTFE), poly (ethylene-chlorotrifluoroethylene (ECTFE) copolymer, ethylene tetrafluoroethylene (ETFE), polyvinylidene fluoride (PVDF), polyvinylfluoride (PVF), and copolymers of halogenated and fluorinated ethylenes. Their high melt viscosity prevents PTFE resins from being
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Hard rules for soft-touch overmolding
polyesters such as polyetherester and polyesterester. TPE-O is a group of polyolefin-based elastomers blended with polypropylene (PP) and ethylene propylene diene monomer (EPDM) rubber. Cross-linked polyolefin TPEs are a subset that is often designated as TPE-V. TPE-S includes block copolymer styrenes
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Polyolefins
Polyethylene, polypropylene, ethylenevinyl acetate, ionomer, polybutylene, polymethylpentene, polydicyclopentadiene) Polyolefin homopolymers are made from ethylene, propylene, butylene, and methyl pentene. Other olefin monomers such as pentene and hexene are used to make copolymers. Because
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Plastics that perform
different monomers. In a copolymer, the monomer chains can be random, alternating, or grafted. A terpolymer is the combination of three different monomers. Combining monomers in various combinations is key to producing the wide range of plastic resins, all with differing properties. Polymers
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Thermoplastic Elastomers
create long-chain molecules that have various sequences, or blocks, of hard and soft segments; graft methods involve grafting one polymer chain to another as branches. Graft techniques offer more possibilities to vary the copolymer because both the backbone monomer and the grafted branches can
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Plastic Compounder's PET Project: Recycling
are rejoined, or repolymerized, into a modified PBT copolymer that is chemically identical to one made from scratch. The process releases ethylene glycol (EG) that’s collected for other uses. The EG represents 28% of the PET’s original mass. The repolymerized PBT contains 60% recycled mass and reduces
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Chemical Resistance of Fluoropolymers (.pdf)
structure (a graft copolymer) of the form: A. A. A. A. A. A. A. A. B. B. B. Copolymers are widely used in the fluoropolymer family and examples are: 1. FEP (Fluorinated ethylene propylene) is a copolymer of tetrafluoroethylene and. hexafluoropropylene of the form: 2. ETFE