𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Preparation and Characterization of Hyperbranched Polymer/Silica Hybrid Nanocoatings by Dual-Curing Process

✍ Scribed by Ezio Amerio; Marco Sangermano; Giulio Malucelli; Aldo Priola; Giancarlo Rizza

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
260 KB
Volume
291
Category
Article
ISSN
1438-7492

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Summary: Organic‐inorganic nanocomposite hybrid coatings were prepared through a dual‐cure process involving cationic photopolymerization of a hyperbranched epoxy functionalized resin and subsequent condensation of an alkoxysilane inorganic precursor. All the formulations investigated gave rise to photocured films characterized by high gel content values. An increase in glass transition temperature and an increase in storage modulus above T~g~ in the rubbery plateau is observed with increasing TEOS content in the photocurable formulation. The important role of GPTS on reducing the inorganic domain size and avoiding macroscopic phase separation was demonstrated by TEM analyses.

TEM obtained for one of the cured films in the presence of GPTS.

magnified imageTEM obtained for one of the cured films in the presence of GPTS.

πŸ“œ SIMILAR VOLUMES

Preparation and characterization of hype
Preparation and characterization of hyperbranched polymer grafted mesoporous silica nanoparticles via self-condensing atom transfer radical vinyl polymerization
✍ Xin Li; Chun-Yan Hong; Cai-Yuan Pan πŸ“‚ Article πŸ“… 2010 πŸ› Elsevier Science 🌐 English βš– 988 KB

Hyperbranched poly(2-((bromobutyryl)oxy)ethyl acrylate) (HPBBEA) was grafted onto the exterior surface of mesoporous silica nanoparticles (MSNs) by surface-initiated self-condensing atom transfer radical vinyl polymerization (SCATRVP). The MSNs with ATRP initiator anchored on the exterior surface (M

Preparation and properties of organosolu
Preparation and properties of organosoluble polyimide/silica hybrid materials by sol–gel process
✍ Zi-Kang Zhu; Yong Yang; Jie Yin; Zong-Neng Qi πŸ“‚ Article πŸ“… 1999 πŸ› John Wiley and Sons 🌐 English βš– 206 KB πŸ‘ 2 views

Organosoluble polyimide/silica hybrid materials were prepared using the sol-gel process. The organosoluble polyimide was based on pyromellitic anhydride (PMDA) and 4,4Ј-diamino-3,3Ј-dimethyldiphenylmethane (MMDA). The silica particle size in the hybrid is increased from 100 -200 nm for the hybrid co