Hydroxylated poly

Carbon Cha.in Backbone Polymers. These polymers may be represented by (4) and considered derivatives of polyethylene, where n is the degree of polymeriza tion and R is (an alkyl group or) a functional group hydrogen (polyethylene), methyl (polypropylene), carboxyl (poly(acryhc acid)), chlorine (poly(vinyl chloride)), phenyl (polystyrene) hydroxyl (poly(vinyl alcohol)), ester (poly(vinyl acetate)), nitrile (polyacrylonitrile), vinyl (polybutadiene), etc. The functional groups and the molecular weight of the polymers, control thek properties which vary in hydrophobicity, solubiUty characteristics, glass-transition temperature, and crystallinity. 

The first application example is the electro-oxidative polymerization of phenol in the presence of 2,2-bis[3,5-dimethyl-4-hydroxyphenyl]-propane, which is the procedure to obtain terminally hydroxylated poly(phenyleneoxide), i.e. the oligomer contained two hydroxy groups per one molecule. 

Scheme 17. a-Methacryloyl-oo-hydroxyl-poly(e-caprolactone) macromonomer... 

Preparation of a-Carboxyl-8-Hydroxyl Poly(Ethylene Oxide-Wocfe-Polyglycidol)... 

Poly(propylene glycol) (PPG) in this case, since only one hydroxyl group is a primary one, PPG is usually capped with some EO in order to convert the secondary hydroxyl terminal also to a primary hydroxyl. Poly(tetramethylene ether) glycol (PTMEG), also known as polytetrahydro-furan (PTHF). 

Other amphiphilic block copolymers were obtained by porcine pancrease lipase initiation of 5-benzyloxytrimethylene carbonate (BTMC) from mono-hydroxyl poly(vinyl pyrolidone) (PVP-OH) [8], Kaihara reported the enzymatic ROP of trimethylene carbonate from a copolymer of PEG and a cyclic acetal with two terminal hydroxyl groups [9], The latter is a degradable segment and the resulting amphiphilic triblock copolymer was used to form micellar structures for which pH-dependent drug release was successfully shown. 

MA1 Maeda, T., Kanda, T., Yonekura, Y., Yamamoto, Y., and Aoyagi, T., Hydroxylated poly(A-isopropylacrylamide) as functional thermotesponsive materials, Biomacromolecules, 7, 545, 2006. 

Alternatively, hydrophilic multi-hydroxyl poly(GMA-OH)-grafted MWCNTs could be converted into multicarboxyl polymer-functionalized CNTs by reaction with succinic anhydride and then used as templates to efficiently sequestrate metal ions such as Ag", Co ", Ni , Au , La and (Scheme 5.3), generating MWCNT-polymer/metal hybrid nanocomposites, nanowires or necklace-like nanostructures, depending on the grafted polymer content and the nature of the captured metals. The combination of SEM, TEM and energy dispersive spectroscopy (EDS) characterizations demonstrated the structure and elements of the hybrid nano-objects. 

Alternatively, hydrophilic multi-hydroxyl poly(GMA-OH)-grafted MWCNTs could be converted into multicarboxyl polymer-functionalized CNTs by reaction with succinic anhydride and then used as templates to... 

PHBHV Bis-hydroxylated poly(3-hydroxybutyrate-co-3-hydroxyvalerate) oligomers... 

Besides aliphatic diisocyanates, an aromatic isocyanate was also used to prepare polyurethanes. A new renewable copolymer (Scheme 17) was synthesized from reactive bis-hydroxylated poly(3-hydroxybutyrate-co-3-hydroxyvalerate) oligomers (PHBHV-diol), isosorbide, and 1,4-phenylene diisocyanate. The molar number-average molecular weights (M of most of the copolyesters were about... 

Hydroxylated poly ether (TSK PW) IDA Zr(IV) Phenols, carboxylic acids [15]... 

DPC has in recent years been applied to studies on a range of photopolymers including DF 2000 photopolymer [5], cinnamoylphenyl methacrylate-glycidyl methacrylate copolymer [6], multiethylene glycol dimethacrylate [7], Ebecryl 270 (aliphatic urethane diacrylate) 1,6-hexanediol diacrylate (Darocur 1173 2-hydroxy-2-methyl-phenylpropan-l-one) [8], epoxy acrylates [9], epoxy vinyl ether formulations [10], polyacrylates, maleimides, and vinyl ethers [11], hydroxylated poly(imides) [12], and polystyrene-poly(n-butylacrylate) copolymers [13]. 

The nature of the alkyl group in alumintun alkyl compoimds has a huge influence, not only on the polymerization activity, but also on the polymer microsUucture. Imuta et al. reported that TMA- orTEAL-proteded allyl alcohol produces end-hydroxylated poly(ethene) in the copolymetization with ethene by 35/MAO (Hgure This can be explained by formation of a... 

COMPARISON BETWEEN HYDROXYLATED POLY ACIDS AND THEORETICAL MODELS... 

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