Inverse emulsion copolymerization of C 16 DMAAC and AM was carried out using Span-80 and OP-10 as emulsifying agent,K 2S 2O 8-Na 2S 2O 4 and W-044 as initiator, gasoline as oil-phase medium The particles size distribution in inverse emulsion and the molecular weight were studied;
The optimal HLB was found to be 11.76 by evaluation of 10% butachlor EW, which was emulsified by the different HLB emulsifier consisted of Span 20 and Tween 20. According to the optimal HLB, different emulsifiers were studied.
A W/O microemulsion was prepared with Span80-PS (petroleum sulfonate) as complex emulsifier, isopropanol as cosurfactant and kerosene as oil phase.
Based on discussions on the nucleation mechanism of particles in the polymerization system, the influences of monomer weight added dropwise, and amounts of initiator and emulsifier on the size and distribution of PS particles were investigated.
PS nanoparticles with smaller diameter such as a number-average diameter of 18.7 nm and better monodispersity were obtained since the dropped styrene amount was suitable under 20wt-% emulsifier amount and 3wt-% initiator amount based on the monomer.
The shape-stabilized phase change materials (PCMs) composed of paraffin wax and silica were prepared in O/W emulsion with cetyl trimethylamine bromide as emulsifier and n-pentanol as assist emulsifier.
Decontaminating solutions that are used in the laboratory practice for the detoxication of hydrophilic process ME solutions are aqueous solutions of alkali hydroxide with additions of hydrogen peroxide and an emulsifier.
The kinetic parameters of radical copolymerization of butyl methacrylate and zinc-containing monomer were studied as influenced by the structure and concentration of various emulsifiers such as oxyalkylated alcohols and alkylphenols.
Calorimetric study of polyvinyl alcohols used as emulsifiers in suspension polymerization of vinyl chloride
The heat effects of dissolution of two pairs of polyvinyl alcohols used as emulsifiers in suspension polymerization of vinyl chloride and the optical transmission of their stirred aqueous solutions as a function of time were determined.
It is found that many factors such as emulsifiers, initiators, reaction temperature, pH value and polymerization technology have influences on the permormance of styrene-acrylate latex.
Microencapsulation of PANI with low pH as the core material was prepared by in situ polymerization of melamine-formaldehyde resins, as the shell material acts as an insulator between PANI particles, using two different emulsifiers.
Polymer beads with a diameter of 60-70 nm and specific functional groups were synthesized by a particular seeded emulsion polymerization technique.
Effects of relative content of HTPB and PPG on emulsion stability, resistance to water and ethanol, thermal stability, compatibility of soft and hard segment, as well as the mechanical property of the cured film were investigated.
Then, the cross-linked magnetic compsoite microspheres containing a carboxyl group were prepared by using an improved emulsion polymerization with divinylbenzene (DVB) as the cross-linking agent.
The results show that the composite microspheres were well dispersed in emulsion with uniform sizes and carboxyl groups on their surface.
Poly(vinyl chloride) composite emulsion resins modified by polyurethane