scispace - formally typeset
Search or ask a question
Book

Chemistry and physics of polycarbonates

01 Jan 1964-
About: The article was published on 1964-01-01 and is currently open access. It has received 639 citations till now.
Citations
More filters
Journal ArticleDOI
TL;DR: The current thrust for materials which are environmental friendly and biodegradable made from polymer matrix composites had become an important topic for academic and industrial research as discussed by the authors, and the current thrust was for materials that are environmentally friendly and bio-friendly made from polymeric materials.
Abstract: The study of polymer matrix composites had become an important topic for academic and industrial research. The current thrust for materials which are environmental friendly and biodegradable made r...

237 citations


Cites background from "Chemistry and physics of polycarbon..."

  • ...…in Table 2 (Cantero et al., 2003; Freitag et al., 1991; Hujuri et al., 2008; Jiang & Kamdem, 2004; Klyosov, 2007; Maheswari et al., 2012; Rimdusit, Damrongsakkul, Wongmanit, Saramas, & Tiptipakorn, 2011; Schnell, 1964; Thejvidi et al., 2006; Trigui et al., 2013; Wood, 1989; Zarate et al., 2003)....

    [...]

  • ...…largest volume engineering thermoplastic surpassing the nylon, because of the excellent toughness, high thermal resistance, glass-like clarity, and good processabilty of polymer composites (Freitag, Fengler, & Morbitzer, 1991; Maheswari, Reddy, Muzenda, & Rajulu, 2012; Schnell, 1964; Wood, 1989)....

    [...]

Patent
07 Nov 1998
TL;DR: A polymer with a hydrolytically labile backbone and having structure (VIII) is defined as a polyamide with up to 18 carbon atoms having a pendent carboxylic acid group or the benzyl ester thereof as discussed by the authors.
Abstract: A polymer with a hydrolytically labile backbone and having structure (VIII) wherein R9 is an alkyl, aryl or alkylaryl group with up to 18 carbon atoms having a pendent carboxylic acid group or the benzyl ester thereof; R12 is an alkyl, aryl or alkylaryl group with up to 18 carbon atoms having a pendent carboxylic acid ester group selected from straight and branched alkyl and alkylaryl esters containing up to 18 carbon atoms and ester derivatives of biologically and pharmaceutically active compounds covalently bonded thereto, provided that the ester group is not a benzyl group or a group that is removed by hydrogenolysis; each R7 is independently an alkylene group containing up to four carbon atoms; A is selected from: (a) and (b) wherein R8 is selected from saturated and unsaturated, substituted and unsubstituted alkyl, aryl and alkylaryl groups containing up to 18 carbon atoms; k is between about 5 and about 3,000; and x and f independently range from zero to less than one.

188 citations

Journal ArticleDOI
TL;DR: Medical applications of degradable implant materials were reviewed with special emphasis on orthopedic polymeric implants, including "pseudo"-poly(amino acids), amino acid derived polymers in which conventional peptide bonds have been replaced by various chemical linkages.
Abstract: The gradual shift from biostable prostheses to degradable, temporary implants represents one of the most significant trends in biomaterials research. In view of this trend, medical applications of degradable implant materials were reviewed with special emphasis on orthopedic polymeric implants. Among the polymeric implant materials derived from natural sources, collagen, various polysaccharides such as cellulose, and microbial polyesters have been intensively investigated. Among the synthetic, degradable polymers, aliphatic polyesters such as poly(glycolic acid), poly(lactic acid), poly(caprolactone) and polydioxanone, are most commonly investigated. Only recently, several new classes of polymers such as poly(ortho esters), polyanhydrides, and degradable polycarbonates have been introduced as potential implant materials. A particularly versatile group of new biomaterials with promising engineering properties are the "pseudo"-poly(amino acids), amino acid derived polymers in which conventional peptide bonds have been replaced by various chemical linkages.

134 citations


Cites background from "Chemistry and physics of polycarbon..."

  • ...Due to the use of BPA in the fabrication of polycarbonate based food containers, baby bottles and kitchen utensils, the toxicological properties of BPA have been carefully studied [29]: BPA has a low level of oral toxicity and was found to be non-carcinogenic in a National Cancer Institute bioassay [30]....

    [...]

Journal ArticleDOI
TL;DR: Enzymatic polymerization represents today an effective and preferable alternative to conventional chemically-catalyzed processes, and offers significant advantages, summarized in the applied mild reaction conditions mainly in terms of temperature and toxicity, and high selectivity of enzymes, resulting in improved quality/performance of end products.

121 citations