Results 211 to 220 of about 25,331 (250)
Process for cellular biosynthesis of poly d-lactic acid and poly l-lactic acid
, 2018 Danilo Porro +3 more
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Polymer Degradation and Stability, 2011
Abstract Poly(lactic acid) (PLA) depolymerases are categorized into protease-type and lipase-type. Protease-types can hydrolyze poly( l -lactic acid) (PLLA) but not poly( d -lactic acid) (PDLA). Lipase-types, including cutinase-like enzyme (CLE) from Cryptococcus sp. strain S-2 preferentially hydrolyze PDLA.
Fusako Kawai +2 more
exaly +2 more sources
Abstract Poly(lactic acid) (PLA) depolymerases are categorized into protease-type and lipase-type. Protease-types can hydrolyze poly( l -lactic acid) (PLLA) but not poly( d -lactic acid) (PDLA). Lipase-types, including cutinase-like enzyme (CLE) from Cryptococcus sp. strain S-2 preferentially hydrolyze PDLA.
Fusako Kawai +2 more
exaly +2 more sources
Poly(lactic acid) crystallization
Progress in Polymer Science, 2012Abstract Poly(lactic acid) is a biobased and compostable thermoplastic polyester that has rapidly evolved into a competitive commodity material over the last decade. One key bottleneck in extending the use of PLA is the control of its crystallinity. Understanding the crystallization behavior is particularly crucial to control PLA's degradation rate ...
Michel A Huneault +2 more
exaly +3 more sources
Poly(lactic acid) modifications
Progress in Polymer Science, 2010Abstract Poly(lactic acid) or polylactide (PLA) is the most extensively researched and utilized biodegradable and renewable thermoplastic polyester, with potential to replace conventional petrochemical-based polymers. In recent times, several PLA-based technologies have emerged with an emphasis on achieving chemical, mechanical, and biological ...
Amol V Janorkar, Douglas E Hirt
exaly +2 more sources
Progress in Polymer Science, 2014
Abstract Poly (lactic acid) or polylactide (PLA) is an aliphatic thermoplastic polyester produced from renewable resources and is compostable in the environment. Because of the massive use of foamed products of petroleum-based polymers, PLA foams have been considered as substitutes for some of these products.
Mohammadreza Nofar, Chul B Park
exaly +2 more sources
Abstract Poly (lactic acid) or polylactide (PLA) is an aliphatic thermoplastic polyester produced from renewable resources and is compostable in the environment. Because of the massive use of foamed products of petroleum-based polymers, PLA foams have been considered as substitutes for some of these products.
Mohammadreza Nofar, Chul B Park
exaly +2 more sources
, 2019 The whole thesis is divided into 8 chapters. Chapter 1 introduces some background information of the polylactic acid (PLA), poly(caprolactone) (PCL) and electrospinning which are the main polymers and technique used for this PhD project.Chapter 2 is a comprehensive literature review related to the project, which firstly introduces nanofibres and ...
Chao Huang (1258452)
openaire +2 more sources
American Journal of Clinical Dermatology, 2004
Poly-L-lactic acid, a synthetic biodegradable polymer, is available as an injectable intradermal implant for use in the correction and restoration of the signs of facial lipoatrophy in patients with HIV infection. In a 96-week noncomparative study in HIV-infected patients with severe facial lipoatrophy, 41% of patients treated with intradermal poly-L ...
Claudia Borelli, Hans C Korting
+6 more sources
Poly-L-lactic acid, a synthetic biodegradable polymer, is available as an injectable intradermal implant for use in the correction and restoration of the signs of facial lipoatrophy in patients with HIV infection. In a 96-week noncomparative study in HIV-infected patients with severe facial lipoatrophy, 41% of patients treated with intradermal poly-L ...
Claudia Borelli, Hans C Korting
+6 more sources
International Journal of Biological Macromolecules, 2023
Recent complications on the use of polypropylene meshes for hernia repair has led to the development of meshes or films, which were based on resorbable polymers such as polycaprolactone (PCL), polylactic acid (PLA) and poly(lactic-co-glycolic acid) (PLGA).
Dodda, Jagan Mohan +7 more
openaire +4 more sources
Recent complications on the use of polypropylene meshes for hernia repair has led to the development of meshes or films, which were based on resorbable polymers such as polycaprolactone (PCL), polylactic acid (PLA) and poly(lactic-co-glycolic acid) (PLGA).
Dodda, Jagan Mohan +7 more
openaire +4 more sources
Poly(lactic acid) composites with poly(lactic acid)‐modified carbon nanotubes
Journal of Polymer Science Part A: Polymer Chemistry, 2013ABSTRACTThis work reports the study of the effect of chemical functionalization of carbon nanotubes on their dispersion in poly(lactic acid). The nanotubes were functionalized by the 1,3‐dipolar cycloaddition reaction, generating pyrrolidine groups at the nanotube surface. Further reaction of the pyrrolidine groups with poly(lactic acid) was studied in
Novais, R. M. +5 more
openaire +2 more sources
Macromolecular Bioscience, 2007
AbstractStereoblock poly(lactic acid) (sb‐PLA) is incorporated into a 1:1 polymer blend system of poly(L‐lactic acid) (PLLA) and poly(D‐lactic acid) (PDLA) that has a high molecular weight to study its addition effect on the stereocomplex (sc) formation of PLLA and PDLA. The ternary polymer blend films are first prepared by casting polymer solutions of
Kazuki, Fukushima +2 more
openaire +2 more sources
AbstractStereoblock poly(lactic acid) (sb‐PLA) is incorporated into a 1:1 polymer blend system of poly(L‐lactic acid) (PLLA) and poly(D‐lactic acid) (PDLA) that has a high molecular weight to study its addition effect on the stereocomplex (sc) formation of PLLA and PDLA. The ternary polymer blend films are first prepared by casting polymer solutions of
Kazuki, Fukushima +2 more
openaire +2 more sources