Handbook of Polymers by George Wypych

By George Wypych

Polymers chosen for this variation of the guide of Polymers comprise all significant polymeric fabrics utilized by the plastics and different branches of the chemical in addition to uniqueness polymers utilized in the electronics, pharmaceutical, clinical, and house fields. vast details is integrated on biopolymers.

The information incorporated within the instruction manual of Polymers come from open literature (published articles, convention papers, and books), literature to be had from brands of assorted grades of polymers, plastics, and accomplished items, and patent literature. The above resources have been searched, together with the latest literature. it may be noticeable from the references that a huge element of the information comes from info released in 2011. This underscores one of many significant targets of this venture, that's to supply readers with the main up to date information.

Frequently, info from diverse assets fluctuate in a extensive variety and so they need to be reconciled. In such situations, values closest to their general and values in response to trying out of the most up-tp-date grades of fabrics are chosen to supply readers with info that's attribute of at the moment on hand items, concentrating on the aptitude use of knowledge in fixing functional difficulties. during this technique of verification many older info have been rejected except they've been proven through lately performed studies.

Presentation of information for all polymers relies on a constant development of information association, even supposing, counting on information availability, simply information fields which include real values are incorporated for every person polymer. the complete scope of the knowledge is split into sections to make information comparability and seek effortless.

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  • Handbook of Polymers comprises details on all crucial facts utilized in functional functions, study, and legislation

    • The so much wanted facts for over 230 of the main accepted polymers
    • The latest reference information on hand in print

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STRUCTURE COMMERCIAL POLYMERS Some manufacturers PHYSICAL PROPERTIES MECHANICAL & RHEOLOGICAL PROPERTIES % 75 (max); usually contains 8-10% water Aliphatic hydrocarbons - good Aromatic hydrocarbons - good Water absorption, equilibrium in water at 23oC CHEMICAL RESISTANCE 44 HANDBOOK OF POLYMERS / Copyrights 2012; ChemTec Publishing Kasapis, S; Mitchell, J R, Int. J. , 29, 315-21, 2001. 19 Method of synthesis - cellulose butyrate is produced by reaction of cellulose with butyric anhydride or butyryl chloride, and condensing agents such as ZnCl2 or H2SO4; use of catalyst such as H2SO4 is very important in this synthesis because reaction between cellulose and anhydride is very slow Catalyst - H2SO4 Crystallinity % 36-45 Cell type (lattice) - orthorhombic Zugenmaier, P J, Appl.

43, 6, 888-96, 2010. 0 Acid dilute/concentrated - good-fair Alcohols - poor 130-520 CHEMICAL RESISTANCE 40 REFERENCES HANDBOOK OF POLYMERS / Copyrights 2012; ChemTec Publishing Amim, J; Kosaka, P M; Petri, D F S; Maia, F C B; Miranda, P B, J. , 332, 477-83, 2009. CAP cellulose acetate propionate PARAMETER UNIT VALUE Alkalis - good Aliphatic hydrocarbons - good Aromatic hydrocarbons - poor Esters - poor Greases & oils - good Halogenated hydrocarbons - poor Ketones - poor Good solvent - acetone, butyl acetate, cellosolve acetate, ethyl acetate, methyl alcohol, methyl ethyl ketone Non-solvent - ethylene glycol, heptane, turpentine, water REFERENCES FLAMMABILITY Autoignition temperature o Limiting oxygen index % O2 432 C 17-19 Volatile products of combustion - CO, CO2 UL rating - HB NFPA: Health, Flammability, Reactivity rating - 1/1/0; 0/0/0 (HMIS) Carcinogenic effect - not listed by ACGIH, NIOSH, NTP Oral rat, LD50 mg kg-1 >6,400 -1 >5,000 TOXICITY Skin rabbit, LD50 mg kg PROCESSING Typical processing methods - Preprocess drying: temperature/ time/residual moisture o mixing, injection molding C/h/% 65-70/2 Processing temperature o C 168--195 Processing pressure MPa 8-10 (injection) Process time s 8-12 (cycle time) Additives used in ¿nal products - Plasticizers: poly(1,3-butylene glycol adipate) (Drapex 429), polyester sebacate (Paraplex G-25), octyl adipate; Antistatic: hydroxyethyl cellulose; Antiblocking: silica; Release: Àuorochemical, microcrystalline wax, polyethylene wax, silicone; Slip: alumina, magnesium stearate, polyethylene wax, silica Applications - ¿lms, housewares, medical, membranes, nail care, ophthalmic, printing inks Outstanding properties - fast solvent release, high melting point, solubility in ink solvents - acrylics, alkyds, amino resins, isocyanate resins, PHB cm-1/- major bands: C=O stretch of ester group  1746; asymmetric stretchning of C-C-O of ester group  1234; asymmetric stretching of O-C-C bond attached to carbonyl BLENDS Suitable polymers ANALYSIS FTIR (wavenumber-assignment) HANDBOOK OF POLYMERS / Copyrights 2012; ChemTec Publishing Schilling, M; Bouchard, M; Khanjian, H; Learner, T; Phenix, A; Rivenc, R, Accounts Chem.

4E8 Young, M-J; Chang, W-S; Ma, C-C M, Eur. Polym. , 39, 165-71, 2003. 471E1 Young, M-J; Chang, W-S; Ma, C-C M, Eur. Polym. , 39, 165-71, 2003. 5 Poulsen, L; Zebger, I; Klinger, M; Eldrup, M, Sommer-Larse, P; Ogilby, P R, Macromolecules, 36, 7189-98, 2003. 1 Poulsen, L; Zebger, I; Klinger, M; Eldrup, M, Sommer-Larse, P; Ogilby, P R, Macromolecules, 36, 7189-98, 2003. HANDBOOK OF POLYMERS / Copyrights 2012; ChemTec Publishing 61 COC cyclic ole¿n copolymer PARAMETER UNIT VALUE REFERENCES STRUCTURE Crystallinity % amorphous Entanglement molecular weight dalton, g/ mol, amu 31,000 Some manufacturers - Mitsui Chemical; Topas Trade names - Apel; Topas COC Blochowiak, M; Pakula, T; Butt, H-J; Bruch, M; Fluodas, G, J.

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