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Lactic acid, chemical structure

See also PBT degradation structure and properties of, 44-46 synthesis of, 106, 191 Polycaprolactam (PCA), 530, 541 Poly(e-caprolactone) (CAPA, PCL), 28, 42, 86. See also PCL degradation OH-terminated, 98-99 Polycaprolactones, 213 Poly(carbo[dimethyl]silane)s, 450, 451 Polycarbonate glycols, 207 Polycarbonate-polysulfone block copolymer, 360 Polycarbonates, 213 chemical structure of, 5 Polycarbosilanes, 450-456 Poly(chlorocarbosilanes), 454 Polycondensations, 57, 100 Poly(l,4-cyclohexylenedimethylene terephthalate) (PCT), 25 Polydimethyl siloxanes, 4 Poly(dioxanone) (PDO), 27 Poly (4,4 -dipheny lpheny lpho sphine oxide) (PAPO), 347 Polydispersity, 57 Polydispersity index, 444 Poly(D-lactic acid) (PDLA), 41 Poly(DL-lactic acid) (PDLLA), 42 Polyester amides, 18 Polyester-based networks, 58-60 Polyester carbonates, 18 Polyester-ether block copolymers, 20 Polyester-ethers, 26... [Pg.595]

Fig. 3.ia-c. Chemical structures of Jessner s Peel components (a Salicylic acid, b Resorcinol, and c Lactic acid)... [Pg.23]

It is a lipophilic compound which removes intercellular lipids that are covalently linked to the cornified envelope surrounding epithelial cells [3]. It also enhances penetration of other agents. Resorcinol (m-dihydroxy benzene) is structurally and chemically similar to phenol. It disrupts the weak hydrogen bonds of keratin [4]. Lactic acid is an alpha hydroxy acid which causes corneocyte detachment and subsequent desquamation of the stratum corneum [5]. [Pg.24]

Hydroxypropionic Acid (3-HPA). Like the structurally isomeric lactic acid, 3-HPA constitutes a three-carbon building block with the potential of becoming a key intermediate for a variety of high-volume chemicals malonic and acrylic acids, methacrylate, acrylonitrile, 1,3-propanediol, and so forth.Thus, Cargill is developing a low-cost fermentation route by metabolic engineering of the microbial... [Pg.39]

Figure 3 Chemical structure of poly(lactic-co-glycolic) acid polymer. The x component represents lactic acid and y component represents glycolic acid. For other poly(hydroxy acids), the side-chain methyl group is replaced by other alkyl groups. Figure 3 Chemical structure of poly(lactic-co-glycolic) acid polymer. The x component represents lactic acid and y component represents glycolic acid. For other poly(hydroxy acids), the side-chain methyl group is replaced by other alkyl groups.
Lactic acid, a compound found both in sour milk and in tired muscles, has the structure shown. What is its chemical formula ... [Pg.71]

Chemically-Controlled Systems. In these systems, the polymer matrix contains chemically-labile bonds. On exposure to water or enzymes the bonds hydrolyze, erode the three dimensional structure of the polymer and release the incorporated reagent into the surrounding medium. Depending on the polymer used, the erosion products may act as interferences, such as by altering the pH of the solution. Examples of these systems are polyglycolic acid (PGA) and a polyglycolic acid - polylactic acid (PGA/PLA) copolymer. PGA hydrolyzes to hydroxyacetic acid, and PGA/PLA hydrolyzes to lactic acid and hydroxyacetic acid. Other chemically-controlled systems are based on polyorthoesters, polycaprolactones, polyaminoacids, and polyanhydrides. [Pg.314]

Lactic acid is a colorless, water-soluble liquid that freezes, or solidifies, at 64.4°F (18°C)—just slightly below normal room temperature. It is scientifically known as alpha-hydroxypropanoic acid and has the chemical formula CgH Og the structural formula is shown below ... [Pg.39]

One of the chemical products of muscle contraction is lactic acid (CH3CH(0H)C02H), a monoprotic acid whose structure is... [Pg.398]

Scheme Chemical structures of poly(e-caprolactone)-b-poly(y-benzyl-L-glutamate) (PCL-PBLG) and poly(L-lactic acid)-b-poly(y-benzyl-L-glutamate) (PLLA-PBLG)... Scheme Chemical structures of poly(e-caprolactone)-b-poly(y-benzyl-L-glutamate) (PCL-PBLG) and poly(L-lactic acid)-b-poly(y-benzyl-L-glutamate) (PLLA-PBLG)...
Lactic acid (LAK-tik AS-id) is a colorless, odorless, syrupy liquid that occurs in two isomeric forms, D-lactic acid and L-lactic acid. Isomers are two or more forms of a chemical compound with the same molecular formula, but different structural formulas and different chemical and physical properties. The D form is produced during metabolic reactions that take place in muscle tissue, while the L form is produced by yeast cells. The synthetic production of lactic acid results in a product consisting of equal amounts of the D and L forms, a mixture known as a racemic mixture. [Pg.391]

The polyesters of lactic acid and glycolic acid have the chemical structures ... [Pg.335]

See other pages where Lactic acid, chemical structure is mentioned: [Pg.69]    [Pg.103]    [Pg.415]    [Pg.207]    [Pg.380]    [Pg.449]    [Pg.61]    [Pg.189]    [Pg.503]    [Pg.298]    [Pg.14]    [Pg.87]    [Pg.32]    [Pg.115]    [Pg.126]    [Pg.189]    [Pg.1]    [Pg.476]    [Pg.8]    [Pg.147]    [Pg.112]    [Pg.115]    [Pg.40]    [Pg.41]    [Pg.890]    [Pg.48]    [Pg.1101]    [Pg.137]    [Pg.241]    [Pg.93]    [Pg.53]    [Pg.145]    [Pg.183]   
See also in sourсe #XX -- [ Pg.167 , Pg.168 , Pg.185 ]

See also in sourсe #XX -- [ Pg.167 , Pg.168 , Pg.185 ]

See also in sourсe #XX -- [ Pg.86 ]

See also in sourсe #XX -- [ Pg.257 ]



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