poly vinyl alcohol poly beta hydroxybutyrate graft copolymers and relevant blends

... (2008) 3:164–167 165 Chemicals Co., Ltd.) as reductant, poly- (vinyl) alcohol (1,500) (98.0%, Showa Chemical Co., Ltd.) as a stabilizer and AgClO4 Á H2O (99.999%, Aldrich Chem Co.) as the source ... investigated by transmission electron microscopy and are shown in Fig The average size and its standard deviation of three different particles—as-synthesized, min, and 30 laser irradiation—were investigated ... process for a critical period to cause photo-thermal melting of the nanoparticles [6, 8–10] Poly( vinyl) alcohol (mp & 230 °C) is expected to be more effective in the above two processes than that...

Ngày tải lên: 22/06/2014, 01:20

... microscopy PLM Poly( 3 -hydroxybutyrate- co-3-hydroxyhexanote) PHBHHx Poly( d,l-lactic) acid PDLLA Poly( lactic) acid PLA Polycaprolactone PCL Polyhydroxubutyrate PHB Polyhydroxyalkanoates PHAs Polyhydroxybutyrate-co-hydroxyvalerate ... sufficient quantity for research, they include: polyhydroxybutyrate (PHB), copolymers of 3 -hydroxybutyrate and 3hydroxyvalerate and 3-hydroxyhexanoate and poly- 3-hydroxyoctanoate [35] Research has ... of (A) PHBHHx and (B) mPCL Figure 19 (a) Surface erosion and (b) bulk degradation of degradable polymers xii List of Tables Table Physical properties of PHB and its copolymers PHBV and PHBHHx in...

Ngày tải lên: 04/10/2015, 15:57

... confirmed that PABP-C and KH III–IV domains are essential and sufficient for both homo- and hetrodimerization between PABP and IMP1 Taken together, these results indicate that IMP1 and PABP may form ... peptides PABP and IMP1 binding region of the ARS We have shown earlier that at least three polypeptides PABP, IMP1, and UNR bind to the ARS element of 5680 PABP mRNA, and among these polypeptides ... RNA only; lanes and 4, purified 6· His-PABP was incubated with DARS-R and DARS-S RNA, respectively; lanes and 5, purified 6· His-IMP1 was incubated with DARS-R and DARS-S RNA (D) and (E) RNA-protein...

Ngày tải lên: 23/03/2014, 10:20

... initiator and a two-step sequential addition of monomers Synthesis of Block Copolymers by Anionic Polymerization The less reactive monomer should be polymerized first • Preparation of ABA triblock copolymer ... Theory Simul 10:381 13 Synthesis of Block Copolymers by Controlled Radical Polymerization • Synthesis of Block Copolymers by Nitroxide-Mediated Radical Polymerization, NMP PS-b-PI 14 Fukunaga K, ... of Block Copolymers by Atom Transfer Radical Polymerization, ATRP 2-bromo-2-methylpropionic acid 4methoxyphenyl ester 1,4-(2’-bromo-2’-methylpropionate)benzene 15 Synthesis of Block Copolymers...

Ngày tải lên: 29/07/2015, 02:06

... Palladium (II) P4VP Poly( 4-vinylpyridine) P4VP060 Poly( 4-vinylpyridine) nanoparticles with diameter of 60 nm P4VP250 Poly( 4-vinylpyridine) nanoparticles with diameter of 250 nm PEGDM Poly( ethylene ... resource recovery 35 2.2.4 Polymeric Nanoparticles 42 2.2.4.1 Introduction 42 2.2.4.2 Polymeric nanoparticles for water/wastewater treatment 45 2.3 Preparation of Poly( 4-vinylpyridine)-based Nanoparticles ... Filtration 61 CHAPTER – PREPARATION AND CHARACTERIZATION OF HIGHLY MONODISPERSED POLY( 4-VINYLPYRIDINE) BASED NANOPARTICLES 65 3.1 Introduction 65 3.2 Materials and Methods 68 3.2.1 Chemicals 68...

Ngày tải lên: 10/09/2015, 15:54

... single-stranded 3’ overhang of the G-rich strand (A) Specific protein complexes bind to the double- and single-stranded telomeric DNA (B) The single-stranded overhang can invade the double-stranded ... contains a leading and a lagging strand Lagging strand synthesis cannot be completed because the removal of primers thus causing net loss of DNA base pairs from the lagging strand (Hug and Lingner, ... enzymes, catalase and SOD reduced the extent of arsenite–induced DNA damage (Nordenson and Beckman, 1991; Wang and Huang, 1994) Antioxidants such as vitamin E, methylamine and benzyl alcohol also...

Ngày tải lên: 11/09/2015, 10:18

... Amphiphilic block copolymers of PFS and poly( acrylic acid) (PFS-b-PAAC copolymers) were prepared via hydrolysis of the corresponding PFS-b-PtBA copolymers The amphiphilic PFS-b-PAAC copolymers were ... of comb-shaped copolymer of fluorinated polyimide and polystyrene (FPI-cb-PS) and of fluorinated polyimide and polypentafluorostyrene (FPI-cb-PFS) copolymer by atom radical polymerization (ATRP) ... methacrylate) -graft -poly( tert-butylacrylate)) (PFS-b-(PGMA-g-PtBA)) and Poly( pentafluorostyrene)-block- (poly( glycidyl methacrylate) -graft -poly( acrylic acid)) (PFS-b-(PGMA-g-PAAC)) Copolymers of the Polyimide...

Ngày tải lên: 16/09/2015, 08:31

... modified with thicker polymeric films and inorganic layers were introduced later Here we discuss the chemical and physical routes for the preparation of CMEs and the electrochemical and other consequences ... support/anchoring Conducting polymers, in particular electrodes modified with conducting polymer film, have enjoyed initial success and recently stimulated extensive activities New types of polymer materials ... 68 3.3 Results and discussion 70 3.3.1 Electropolymerization of 4NoPD 70 3.3.2 Electrochemical characterization of P4NoPD films 74 3.3.2.1 Films formed using different cycles and different supporting...

Ngày tải lên: 16/09/2015, 17:12

... above, or a vinyl copolymer can first be formed between the vinyl monomer of interest (vinylferrocene) or styrene sulfonic acid and a silane monomer F Radiofrequency polymerization Forming polymeric ... zeolites and clays into the polymer), or formed in situ within a polymer film (e.g metal particles into the polymer layer), multiple layers of different polymers (bilayer structures), polymers sandwiched ... or reduction of a nonionic and electronically insulating parent polymer to form a conductive polycationic or polyanionic daughter polymer Further, ECP is conjugated, and the cationic sites created...

Ngày tải lên: 16/09/2015, 17:12

... direct visualization, and cortical and cancellous bone graft strips were harvested No patients had indwelling local anesthetic infusion catheters and no patients had bone graft harvest of both ... factor and showing good internal consistency (α = 0.88) We should note that the Exploratory Factor Analysis results and they differ when using tetrachoric and polychoric correlations With polychoric, ... reported physical and mental health scores below the general population (mean = 40.7 and 47.2, respectively; as compared to age- and gender-adjusted population norms of 50) and Oswestry scores...

Ngày tải lên: 18/06/2014, 18:20

... in both renal allografts Resistance indices were between 0.67 and 0.76 (within the normal range) During transplantation, the warm kidney ischemia period was 46 and 65 minutes, and cold kidney ischemia ... day 13 (34 and 25 glomeruli, Figure 2), and in one patient on day 48 post-transplant (22 glomeruli, Figure 3) ruled out renal-allograft rejection Moreover, there was no detection of polyomavirus ... two renal allograft recipients from the same deceased donor However, a postoperative bleeding complication in one patient, a prolonged cold and warm ischemia period, and overall allograft quality...

Ngày tải lên: 11/08/2014, 17:21

... Authors' contributions SM, ES and HG collected and analyzed the data ACG analyzed the data KRW and JAR conceived and coordinated the study All the authors contributed to, read and approved the final ... groups (mean(

Ngày tải lên: 12/08/2014, 23:21

... independent predictors of in-hospital and one-year mortality and assessed the impact of betablocker at admission and/ or at discharge on outcome Materials and methods Setting and study population This report ... Discontinuation of beta- blocker therapy in patients admitted on beta- blockers was associated with higher mortality Short and long-term mortality has been studied in some surveys and trials involving ... http://ccforum.com/content/14/6/R198 Page of 10 Table Different agents and mean dosages of beta- blocker administered at presentation, at 24 hours and at discharge Betablocker Hospital admission n (%) mean dosage (mg)...

Ngày tải lên: 13/08/2014, 21:21

... initiate the free radical graft copolymerization of vinyl monomers Landler and Lebel (Landler and Lebel, 1960) used an ozone flow on polystyrene (PS) and succeeded in grafting vinylic monomers Sarraf ... bulk graft concentration of (a) the PAAc-g-FPI copolymers and (b) the P4VP-g-FPI copolymers xi Figure 6.3 TG analysis curves of: (1) the FPI homopolymer, the PAAc-g-FPI copolymers with graft ... thermally-induced graft copolymerization with either AAc or 4VP in NMP solution was carried out The resulting FPI copolymers with grafted AAc and 4VP side chains (the PAAc-g-FPI and P4VP-g-FPI copolymers, ...

Ngày tải lên: 17/09/2015, 17:20

... HUFA and phospholipids World Aquaculture 21, 123–125 Doi, Y., Kanesawa, Y., Kunioka, M., Saito, T., 1990 Biodegradation of microbial copolyesters: poly (3 hydroxybutyrate co–3–hydroxyvalerate) and ... SCFA β hydroxybutyrate có khả khống chế phát triển dòng vi khuẩn có độc lực Vibrio campbellii điều kiện in vitro Dựa kết này, tác giả tiếp tục nghiên cứu xem dạng polymer SCFAs poly β hydroxybutyrate ... Recent advances in microbial polyhydroxyalkanoates Process Biochemistry 40, 607–619 Kim, B.S., 2000 Production of poly (3 hydroxybutyrate) from inexpensive substrates Enzyme and Microbial Technology...

Ngày tải lên: 24/03/2014, 21:21

... crosslinking and grafting of poly- TMPTMA chain radical on to PVC molecule to form graft copolymer, crosslinked structures as well as three-dimensional network limit molecular mobility and melting ... of graft copolymer, with relatively short bulky chains of poly- TMPTMA linking the PVC molecules and three-dimensional network These structures cause restriction of molecular 112 mobility and ... crosslinking of poly- TMPTMA onto PVC to form graft copolymer, crosslinked structures like PVC-(TMPTMA)x and PVC-(TMPTMA)xPVC as well as three-dimensional network is able to improve expansion and penetration...

Ngày tải lên: 03/04/2014, 15:20

... http://www.nanoscalereslett.com/content/6/1/637 is very important Polysulfones, polyarylates, polycarbonates, poly( arylethers), poly( arylketones), and polyimides are frequently used in industrial polymeric membrane gas separations ... polymer matrix, and silicalite, as the molecular sieve additive In the work previously conducted by one of the authors (Wang et al.), poly( furfuryl alcohol) was used to prepare a zeolite 4A polyfurfuryl ... of polyethylene terephthalate, atactic polypropylene, and cis-1,4-polybutadiene via molecular dynamics simulation Soft Matter 2011, 7:2981-2988 19 Barrer RM, Rideal EK: Permeation, diffusion and...

Ngày tải lên: 20/06/2014, 23:20

... acquisition of data and drafted the manuscript FQ carried out the SEM characterization and participated the analysis and interpretation of data ZL and HJY helped to draft and revise the manuscript ... Microwave-polyol process for Pt and Ag nanoparticles Langmuir 2002, 18:5959 40 Hoppe CE, Lazzari M, Pardinas-Blanco I, Lopez-Quintela MA: One-step synthesis of gold and silver hydrosols using poly( N -vinyl- 2-pyrrolidone) ... Synthesis of bismuth micro- and nanospheres by a simple refluxing method Mater Lett 2009, 63:2239 Li J, Fan H, Chen J, Liu L: Synthesis and characterization of poly( vinyl pyrrolidone)-capped bismuth...

Ngày tải lên: 21/06/2014, 06:20

... hy vọng tăng cao hiệu suất thu nhận PHB Đồng thời nghiên cứu tạo dạng đồng polymer (PHBV: poly-  hydroxybutyrate co poly-  - hydroxyvalerate) nhằm gia tăng phân tử lượng sản phẩm, tăng độ đàn ... inhibition of medium components for poly- hydroxybutyrate production, Journal of Microbiol and Biotech 19:357-361, 2003 Riis V, Mai W., Gas chromatographic determination of poly- -hydroxybutyric acid ... ứng dụng TÀI LIỆU THAM KHẢO [1] [2] [3] [4] [5] Anderson AJ, Dawes EA, Occurrence, metabolism, metabolic role and industrial uses of bacterial polyhydroxyalkanoates, Microbiological Rewiews,...

Ngày tải lên: 22/07/2014, 13:22

Ngày tải lên: 07/08/2014, 18:21