نتایج جستجو برای: grafted

تعداد نتایج: 10244  

Journal: :Carbohydrate polymers 2012
Andrew Marais Joby J Kochumalayil Camilla Nilsson Linda Fogelström E Kristofer Gamstedt

Poly(L-lactic acid) (PLLA) chains were grafted on xyloglucan substrates via ring-opening polymerization of the L-lactide monomer. Different parameters such as the nature of the substrate (native or modified xyloglucan) and the substrate/monomer ratios were varied in the synthesis to achieve different lengths of the grafted chains. A range of experimental techniques including infrared spectrosco...

2013
Michael J. A. Hore Jamie Ford Kohji Ohno Russell J. Composto Boualem Hammouda

Small-angle neutron scattering (SANS) is a sensitive technique that is able to probe the structure of polymer-grafted nanoparticles and free polymer chains. Here, we combine SANS measurements with self-consistent field theory (SCFT) calculations to study the structure of deuterated poly(methyl methacrylate) (dPMMA) nanocomposites containing PMMA-grafted Fe3O4 nanospheres, with a specific emphas...

2016
Masahito Toyonaga Patchanee Chammingkwan Minoru Terano Toshiaki Taniike

Grafting terminally functionalized polypropylene (PP) to nanofillers provides well-defined PP-based nanocomposites plausibly featured with a physical cross-linkage structure. In this paper, a series of PP-grafted silica nanoparticles (PP-g-SiO2) were synthesized by varying the number of grafted chains per silica particle, and influences of the number and the molecular weight of grafted chains w...

2004
Emanuel Lahav Eli Tomer

Most fruit-tree breeding projects are based on selection of seedlings in regard to their performance. The selected seedlings are vegetatively propagated, usually by grafting. It is highly important for the breeder to know whether the performance of the grafted tree will resemble the performance of the original seedling. In this study the performance of avocado and mango seedlings was compared w...

Grafting polymerization was a valuable method for the modification of the chemical and physical properties of polymer surfaces. In this paper, the grafting of cationic vinyl monomer with quaternary ammonium groups, methacryloxyethyltrimethyl ammonium chloride (DMC), onto the isotactic polypropylene (iPP) granule was performed by suspension solid-state grafting process. The techniqu...

Journal: :ChemistrySelect 2021

In order to improve collagen bioactivity for regenerative medicine approaches, thymosin-β4 (Tβ4P) and Human Vitronectin (HVP) derived peptides are grafted by thiol-ene Michael addition. Tβ4P HVP known exert a pro-angiogenic pro-adhesive activity respectively is involved in osteogenesis promotion. The ability of these increase cell adhesion angiogenesis properties assessed on human lines. partic...

Journal: :Journal of colloid and interface science 2007
Y Zhang Y M Lam

Poly(vinyl pyrrolidone) (PVP) was grafted onto Pluronic F127 (PEO-PPO-PEO) to produce novel amphiphilic PVP-g-F127 graft copolymers. A controlled synthesis method was used to graft PVP onto different parts of F127. Two types of graft polymers were obtained: one has PVP grafted onto the PEO part of F127 and the other has PVP grafted onto the PPO part of F127. The association behavior of the two ...

2002
Rosa M. Rivero Juan M. Ruiz Esteban Sánchez Luis Romero

Non-grafted tomato plants (Lycopersicon esculentum L. cv. Tmknvf2) and grafted tomato plants (L.esculentum L. cv. Tmknvf2¿L.esculentum L. cv. RX-335) were grown for 30 days at three different temperatures (10æC, 25æC and 35æC). In the leaves of these plants, the enzymatic activities of SOD, GPX, CAT, APX, DHAR and GR were analysed, as were the concentrations of total H2O2, ascorbate and glutath...

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