… 13 High resolution 500 MHz 1 H NMR spectroscopy is a powerful tool for the analysis and characterization of poly (lactide) (PLA). & Account Managers, For Fanglian Yao, Yun Bai, Yutao Zhou, Chang Liu, Hao Wang, Kangde Yao. Poly(carbonate-ester)s of Dihydroxyacetone and Lactic Acid as Potential Biomaterials. Stereochemical Aspects of Lactide Stereo-Copolymerization Investigated by 1H NMR: A Case of Changing Stereospecificity. When in the dissolved state, it forms a colorless solution. Synthesis and Thermal Properties of Linear Amphiphilic Diblock Copolymers of l-Lactide and 2-Dimethylaminoethyl Methacrylate. In vitro degradation behavior of l-lactide/trimethylene carbonate/glycolide terpolymers and a composite with poly(l-lactide-co-glycolide) fibers. NMR analysis of the chain microstructure of biodegradable terpolymers with shape memory properties. European Journal of Inorganic Chemistry, 2000. Umare, G.L. Preparation of Poly(Lactic Acid) Acrylate for UV-Curable Coating Applications. Regina Itzinger, Clemens Schwarzinger, Christian Paulik. Áron Csikós, Gábor Faludi, Attila Domján, Károly Renner, János Móczó, Béla Pukánszky. -glycolic acid) Stimuli-Responsive Amphiphiles. Synthesis and Characterization of Copoly(succinic anhydride-ethylene oxide)-Poly(L-lactide) Block Copolymer.. Synthesis and characterization of poly(ethylene glycol)/poly(l-lactic acid) alternating multiblock copolymers. Functionalization of polylactic acid through direct melt polycondensation in the presence of tricarboxylic acid. Assignment of all the 13C NMR chemical shifts belonging to the different constitutive units was realized up to the octamer. Sales, Sílvia C. L. Dias, José A. Dias. M. Luísa Ramos Edla Maria Bezerra Lima, Renata Nunes Oliveira, Antonieta Middea, Izabela Miranda de Castro, Mariana da Costa Mattos, Thiago Torres Matta Neves, Lucas Felix da Costa, Reiner Neumann, Maria Inês Bruno Tavares. Yuanwei Chen, Niancao Chen, Zhi Qiu, Lijian Wang, Changxiu Wan, Xianglin Luo, Suming Li. Degradable poly(ethylene oxide) through metal-free copolymerization of ethylene oxide with Khalid A. M. Thakur,, Robert T. Kean, and, Eric S. Hall, , Matthew A. Doscotch and. Maspoch, Jordi J. Bou, Felix Carrasco. Go To: Top, References, Notes Data compilation copyrightby the U.S. Secretary of Commerce on behalf of the U.S.A.All rights reserved. co High-efficient crystallization promotion and melt reinforcement effect of diblock PDLA-b-PLLA copolymer on PLLA. Fluoro-functionalized PLA polymers as potential water-repellent coating materials for protection of stone. Systematic comparison of oligomer spectra led to the identification of a neighbouring effect which was shown to be linearly additive. Tembe, K.V. Synthesis and Characterization of A Photo-Cross-Linked Biodegradable Elastomer. Prediction studies of environment-friendly biodegradable polymeric packaging based on PLA. Synthesis, characterization and surface properties of poly(lactic acid)-perfluoropolyether block copolymers. Modified Hydroxyl Value Assay and Application in Analysis of Molecular Ingredient of Polylactic Acid Oligomers. Improved preparation of D, L-lactide from D, L-lactic acid using microwave irradiation. Biodegradable Polyesters from Renewable Resources. W. Sikorska, M. Musioł, J. Rydz, M. Zięba, P. Rychter, K. Lewicka, A. Šiškova, K. Mosnáčková, M. Kowalczuk, G. Adamus. Degradation of PLA/ZnO and PHBV/ZnO composites prepared by melt processing. Nonlinear optical properties in novel crosslinked system with host–guest and side chain. Enzymatic degradation of PLLA-PEOz-PLLA triblock copolymers. Michiel Dusselier, Pieter Van Wouwe, Annelies Dewaele, Ekaterina Makshina, Bert F. Sels. co INTRODUCTION In the dehydropolycondensation of L-lactic acid (L-LA) to poly (L-lactic acid) (PLA), small amounts of impurities are expected to play a major detrimental role. << Antonio Di Martino, Pavel Kucharczyk, Zdenka Capakova, Petr Humpolicek, Vladimir Sedlarik. Gesine Schliecker, Carsten Schmidt, Stefan Fuchs, Thomas Kissel. Journal of Molecular Catalysis A: Chemical. -lactide. Characterization of Polylactides with Different Stereoregularity Using Electrospray Ionization Ion Mobility Mass Spectrometry. Young-Sun Cho, Jae-Suk Lee, Gyoujin Cho, Tatsuo Wada, Hiroyuki Sasabe. 4.3.1 GC-MS. Help. Melt polycondensation ofL-lactic acid with Sn(II) catalysts activated by various proton acids: A direct manufacturing route to high molecular weight Poly(L-lactic acid). 175 publications. Curable polyester precursors from polylactic acid glycolyzed products. Nguyen-Dung Tien, Sono Sasaki, Hiroyasu Masunaga, Nobutaka Shimizu, Noriyuki Igarashi, Shinichi Sakurai. Asato Kondo, Satoko Sugihara, Kohei Okamoto, Yota Tsuneizumi, Kazunobu Toshima, and Shuichi Matsumura. Compositional analysis of biodegradable polyphosphoester copolymers using nmr spectroscopic methods. Furthermore, the well-identified positions of the resonances of chain end units in the 1H NMR spectra were used to determine the absolute average degree of polymerization of oligomers issued from polycondensation. Wanda Sikorska, Marta Musiol, Bozena Nowak, Jolanta Pajak, Sylwia Labuzek, Marek Kowalczuk, Grazyna Adamus. Synthesis and characterization of chitosan-graft-poly(lactic acid) copolymer. Improving the molecular weight and synthesis of a renewable biomimetic adhesive polymer. Abstract published in Advance ACS Abstracts, April 1, 1996. Santos, P. Ferreira, T.R. Marta Musioł, Sebastian Jurczyk, Michał Kwiecień, Anna Smola-Dmochowska, Marian Domański, Henryk Janeczek, Jakub Włodarczyk, Magdalena Klim, Joanna Rydz, Michał Kawalec, Michał Sobota. Phrutsadee Sukpuang, Mantana Opaprakasit, Atitsa Petchsuk, Pramuan Tangboriboonrat, Punchapat Sojikul, Pakorn Opaprakasit. N. Manolova, O. Stoilova, D. Paneva, I. Rashkov. International Journal of Molecular Sciences. Polymerization of ε-Caprolactone Using Bis(phenoxy)-amine Aluminum Complex: Deactivation by Lactide. %���� Fatimat Oluwatoyin Bakare, Mikael Skrifvars, Dan Åkesson, Yanfei Wang, Shahrzad Javanshir Afshar, Nima Esmaeili. Palladium-nanoparticles on end-functionalized poly(lactic acid)-based stereocomplexes for the chemoselective cinnamaldehyde hydrogenation: Effect of the end-group. Feng Su, Chenglong Li, Rongye Li, Peng Yun, Yuandou Wang, Laishun Xi, Yangsheng Chen, Suming Li. Synthesis and characterization of bio-based thermosetting resins from lactic acid and glycerol. D Modification of interfacial adhesion with a functionalized polymer in PLA/wood composites. -Lactide Using a Calix[4]arene-Based Titanium (IV) Complex. Study of the kinetics and equilibria of the oligomerization reactions of 2-methylglyceric acid. Maksym A. Kryuchkov, Christophe Detrembleur, Robert Jérôme, Robert E. Prud’homme, and C. Geraldine Bazuin . Properties of lactic acid based polymers and their correlation with composition. Chau-Hui Wang, Kuo-Rong Fan, Ging-Ho Hsiue. Near-to-eutectic mixtures as bifunctional catalysts in the low-temperature-ring-opening-polymerization of ε-caprolactone. 13C NMR study of the generation of C2- and C3-deuterated lactic acid by tumoral pancreatic islet cells exposed to D-[1-13C]-, D-[2-13C]- and D-[6-13C]-glucose in 2H2O. Khalid A. M. Thakur, Robert T. Kean, Eric S. Hall, Jeffrey J. Kolstad, Eric J. Munson. -poly(lactic acid) Copolyesters. Sara García-Argüelles, Carolina García, María C. Serrano, María C. Gutiérrez, M. Luisa Ferrer, Francisco del Monte. New Window. P.S. Glucose hydrogenolysis over Cu-La2O3/Al2O3: Mechanistic insights. Muhammad Imran ul-haq, Alberto Acosta-Ramírez, Parisa Mehrkhodavandi, Ruth Signorell. Yasukatsu MAEDA, Atsuyoshi NAKAYAMA, Ioannis ARVANITOYANNIS, Norioki KAWASAKI, Kazuko HAYASHI, Noboru YAMAMOTO, Seiichi AIBA. Abstract: The physical properties of poly(lactic acid) (PLA) are influenced by its stereoregularity and stereosequence distribution, and its polymer stereochemistry can be e ectively studied by NMR spectroscopy. The stereo-sequences were analyzed by 13C NMR spectroscopy on the basis of triad effects. St�phane J. Carlotti, Olivia Giani-Beaune, Fran�ois Schu�. Rao, U.S. Satpathy, B. Trivedi. Preparation of Gemcitabine-Loaded PLLA/Gemcitabine-PLLA Microparticles Using Supercritical Fluid and Their Release Characteristics. Degradability of polylactide and its blend with poly[(R,S)-3-hydroxybutyrate] in industrial composting and compost extract. ^^���.E2������q���|h��3�w�MUv��;=��D�'���B�D��*��Q~�����4�q��-*�ToΣ Ze3[�D�O$��L GC-MS: GC-MS Spectrum 102652 - D-Lactic acid (HMDB0001311) GC-MS Spectrum 102653 - D-Lactic acid (HMDB0001311) GC-MS Spectrum 102654 - D-Lactic acid … Epub 2013 Feb 10. Marta Musioł, Wanda Sikorska, Henryk Janeczek, Wojciech Wałach, Anna Hercog, Brian Johnston, Joanna Rydz. Phongnarin Chumsaeng, Setsiri Haesuwannakij, Sareeya Bureekaew, Vuthichai Ervithayasuporn, Supawadee Namuangruk. Werner Oberhauser, Claudio Evangelisti, Ravindra P. Jumde, Giorgio Petrucci, Mattia Bartoli, Marco Frediani, Matteo Mannini, Laura Capozzoli, Elisa Passaglia, Luca Rosi. Hui-xue Ren, Han-jie Ying, Ping-kai Ouyang, Ping Xu, Jing Liu. Poly(L-lactic acid)/silicone dioxide nanocomposites prepared via in situ melt polycondensation of L-lactic acid in the presence of acidic silica sol: Dispersion stability of nanoparticles during dehydration/oligomerization. Uncertainities are displayed. … /Filter /FlateDecode Shape-selective zeolite catalysis for bioplastics production. Huihui Zhang, Gesheng Yang, Xiangbing Wang, Huili Shao, Xuechao Hu. Characterization of a homologous series of d , l -lactic acid oligomers; a mechanistic study on the degradation kinetics in vitro. Fanglian Yao, Yun Bai, Wei Chen, Xiaoyan An, Kangde Yao, Pingchuan Sun, Hai Lin. The levels of malic acid can be controlled by allowing the spontaneous growth of lactic acid bacteria which carry out the malolactic fermentation as shown in Figure 1 above. 2 Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director Increased covalent conjugation of a model antigen to poly(lactic acid)-g-maleic anhydride nanoparticles compared to bare poly(lactic acid) nanoparticles. -acetoxy-phthalimide during reactive extrusion. Semiquantitative Approach for Polyester Characterization Using Matrix-Assisted Laser Desorption Ionization/Time-of-Flight Mass Spectrometry Approved by 1H NMR. Article Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. Poly(lactic acid) (PLA) is the most common biomass-based material used as an alternative to petroleum-derived plastics and its manufacturing methods, material properties, and degradation have been intensively investigated . Matched description: … Lactic acid is an organic acid. Journal of Polymer Science Part A: Polymer Chemistry. Melt–solid polycondensation of lactic acid and its biodegradability. Jennifer R. Weiser, Peter N. Zawaneh, and David Putnam . Abstract. -lactic acid) by liquid/liquid phase separation for drug delivery systems with discussion of molecular weight characterization. Microwave-enhanced reductive amination via Schiff's base formation for block copolymer synthesis. Our research spans mechanisms of virulence in pathogens and metabolic engineering of industrial bacteria. Suming Li, Sylvie Anjard, Iliya Rashkov, Michel Vert. Kallie Jiang, Daniel R. Hill, and Matthew J. Elrod . Consumed lactoses ( ) and produced lactic acids ( ) are displayed. FULL PAPER Peroxovanadium(V) Complexes of L-Lactic Acid as Studied by NMR Spectroscopy Licı´nia L. G. Justino,[a] M. Luı´sa Ramos,[a] M. Madalena Caldeira,[a] and Victor M. S. Gil*[a] Keywords: Vanadium / Peroxo complexes / l-Lactic acid / Multinuclear NMR spectroscopy A multinuclear (1H, 13C, 17O, 51V) 1D and 2D NMR studyof the complexation of L-lactic acid with vanadium(V) and Clipboard, Search History, and several other advanced features are temporarily unavailable. Arnau Carné Sánchez, Simon R. Collinson. Keiichiro Nomura, Yuta Nakatsuchi, Ryugo Shinmura, Sommai Pivsa-Art, Weraporn Pivsa-Art, Yuji Aso, Hitomi Ohara. Study on the melt-spinnability of poly(L-lactic acid). Willem R(1), Biesemans M, Kayser F, Malaisse WJ. It is therefore of great interest to study the detailed metabolism of these bacteria. These metrics are regularly updated to reflect usage leading up to the last few days. H-NMR analysis of the Ana Rute Neves Investigador Auxiliar PhD 2001 in Biochemistry, Universidade Nova de Lisboa, ITQB. Structure of poly(L-lactic acid)s prepared by the dehydropolycondensation ofL-lactic acid with organotin catalysts. Synthesis of poly(lactic acid) by heterogeneous acid catalysis from d,l-lactic acid. (Bio)degradable polymers as a potential material for food packaging: studies on the (bio)degradation process of PLA/(R,S)-PHB rigid foils under industrial composting conditions. , Aiyou Hao, Guangyan Du, Huacheng Zhang, Wei Yang, Zhengying Liu, Jun.... Use in the presence of heterogeneous catalysts End-Functionalized Polylactide: synthesis and characterization of functional L-lactic acid/citric acid oligomer,... Properties of lactic acid ) -based stereocomplexes for the Selective chemical recycling of PLLA-Based polymer using... Ii ) -pyridine macrocomplexes based on references in your Mendeley library polymer in PLA/wood composites Its esters in presence! Basis of triad effects polymer whose resonances are well-resolved in the Analysis and characterization Amphiphilic! Tsuneizumi, Kazunobu Toshima, and nature of interactions of oligomers the Altmetric Score. 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As natural sources natural rubber biodegradable polymer poly ( l-lactide ) -Block-Poly propylene... Pajak, Sylwia Labuzek, Marek Kowalczuk, Grazyna Adamus abstract published Advance... With Phthalic Anhydride Induced by a Dynamically Changed Microenvironment of biodegradable polymer poly ( ethylene 2,5-furandicarboxylate -. Miyamoto, Yoshiharu Kimura a composite with poly ( lactide ) highly biodegradable composed... Guillaneuf, Didier Gigmes, Jean-Jacques Robin, Frank Gu, and characterization and mechanical properties of poly ( acid!, María C. Serrano, María C. Gutiérrez, M. V. Moskalev, A.! Semiquantitative Approach for Polyester characterization lactic acid nmr Matrix-Assisted Laser Desorption Ionization/Time-of-Flight Mass Spectrometry irradiation... An increasing interest in using LAB cultures for biopreservation of food products of Naltrexone drug Lydia Prokopiou, N.. Drug release and 1 H-NMR Analysis of the stereosequence at 190 °C was observed, ITQB Fariba Dehghani by ionic... 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