نتایج جستجو برای: silane grafting polyolefin

تعداد نتایج: 32863  

2008
M. Cavarroc

Silane-based plasmas are widely used to deposit nanostructured silicon thin films or to synthesize silicon nanoparticles. Dust particle formation in Ar/SiH4 plasmas is a continuous phenomenon: as long as silane precursors are provided, new dust generations are formed. Successive generations can be monitored thanks to various electrical (Vdc/3H) and optical (OES, video imaging) diagnostics. Expe...

Journal: :Chemical communications 2009
Yu-Jun Zhao Li-Jun Serena Tan Bin Li Si-Min Li Teck-Peng Loh

This communication describes a highly efficient aziridinyl polyolefin cyclization catalyzed by InBr(3) to synthesize chiral terpenoid bearing a 3-amino group in the A ring; both good yields and excellent asymmetric induction were achieved.

ژورنال: مجله دندانپزشکی 2011
اسلامی امیرآبادی, غلامرضا, مهویدی زاده, سمانه, نصیری, مجید,

Background and Aims: The aim of this in vitro study was to compare shear bond strength of metal brackets bonded to dental porcelain on the basis of presence or absence of silane, type of acid [hydrofluoric acid (HF) or phosphoric acid (H3PO4)] and roughness of porcelain surface (glazed or deglazed) within mouth-like environment.Materials and Methods: Eighty glazed ceramic disks were randomly di...

2010
Hiroshi Suzuki Tomomi Harashima Takashi Asano Osamu Komiyama Toshikazu Kuroki Kazuyo Kusaka Misao Kawara

Journal: :Chemical communications 2016
Nan Hu Cheng-Kang Mai Glenn H Fredrickson Guillermo C Bazan

A simple, one-pot approach to synthesize random semicrystalline/amorphous multiblock copolymers (12-17 blocks per chain on average) is demonstrated that takes advantage of acyclic diene metathesis (ADMET) polymerization of α,ω-divinyl-terminated telechelic polyolefins. This synthetic approach offers a generic, viable and economical route to polyolefin-based multiblock copolymers and may be exte...

Journal: :journal of dental school, shahid beheshti university of medical sciences 0
a. ahmadzadeh dept. of prosthodontics, school of dentistry, ahwaz university of medical sciences, ahwaz, iran. z. ghasemi dept. of prosthodontics, school of dentistry, islamic azad university, shiraz, iran. n. panahandeh dept. of restorative dentistry, school of dentistry, shahid beheshti university of medical sciences, tehran, iran. f. golmohammadi dept. of prosthodontics, school of dentistry, kermanshah university of medical sciences, kermanshah , iran. a. kavyani dept. of restorative dentistry, school of dentistry, ahwaz university of medical sciences, ahwaz, iran.

objective: ceramics have advantages such as optimal esthetics and biocompatibility. however, in the oral environment, they are subjected to high levels of stress due to masticatory forces, saliva, thermal changes and alterations of ph, which increase their risk of fracture. since replacement of these restorations is costly and time-consuming, composite resin is often used for intraoral repair o...

2015
Rodrigo Furtado de Carvalho Caroline Cotes Estevão Tomomitsu Kimpara Fabíola Pessoa Pereira Leite Mutlu Özcan

silane to improve the adhesion of phosphate monomer-based (MDP) resin cement to glass ceramic. Resin and feldspathic ceramic blocks (n=48, n=6 for bond test, n=2 for microscopy) were randomly divided into 6 groups and subject to surface treatments: G1: Hydrofluoric acid (HF) 9.6% for 20 s + Silane + MDP resin cement (Panavia F); G2: HF 9.6% for 20 s + Silane + Heat Treatment (oven) + Panavia F;...

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