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Polyvinyl alcohol boric acid

Polyvinyl Alcohol Boric Acid— A Matrix with High Liquid Crystal... [Pg.119]

Polyvinyl Alcohol Boric Acid Matrix and 5CB Nematogen.130... [Pg.119]

Polymer Dispersed Liquid Crystal Films Based on Polyvinyl Alcohol Boric Acid Carrying Matrix and... [Pg.119]

POLYVINYL ALCOHOL BORIC ACID—A MATRIX WITH HIGH LIQUID CRYSTAL ANCHORING POWER... [Pg.130]

SCHEME 7.4 Structure of the polyvinyl alcohol boric acid and benzoate smectogen. [Pg.133]

Marin Luminita, Ailincai Daniela, and Paslaru Elena. Monodisperse PDLC composites generated by use of polyvinyl alcohol boric acid as matrix. RSC. Adv. 4 no. 72 (2014) 38397-38404. [Pg.137]

Wang and co-workers [27] in their study of the thermal and dynamic modulus properties of polyvinyl alcohol - boric acid gels by DSC and dynamic mechanical... [Pg.122]

Polyvinyl alcohol Boric acid/iodine Greenish blue Hydroxy 8,9... [Pg.140]

Finally, the water-soluble polyesters of phosphoric or boric acid with glycols or glycerol should be mentioned. They can be used in combination with water-soluble polymers like polyvinyl alcohol, polyacrylamide, and polyvinyl pyrrolidone. [Pg.101]

Lopez Garcia et al. [2] have described a rapid and sensitive spectrophotometric method for the determination of boron complex anions in plant extracts and waters which is based on the formation of a blue complex at pH 1 - 2 between the anionic complex of boric acid with 2,6-dihydroxybenzoic acid and crystal violet. The colour is stabilised with polyvinyl alcohol. At 600 nm the calibration graph is linear in the range 0.3-4.5 xg boron per 25 ml of final solution, with a relative standard deviation of 2.6% for xg/l of boron. In this procedure to determine borate in plant tissues, the dried tissue is treated with calcium hydroxide, then ashed at 400 °C. The ash is digested with 1N sulfuric acid and heated to 80 °C, neutralized with cadmium hydroxide and then treated with acidic 2,6-dihydroxybenzoic acid and crystal violet, and the colour evaluated spectrophotometrically at 600 nm. Most of the ions present in natural waters or plant extracts do not interfere in the determination of boron complex anions by this procedure. Recoveries of boron from water samples and plant extracts were in the range of 97 -102%. [Pg.249]

See other pages where Polyvinyl alcohol boric acid is mentioned: [Pg.130]    [Pg.130]    [Pg.361]    [Pg.412]    [Pg.435]    [Pg.266]    [Pg.95]    [Pg.732]    [Pg.434]    [Pg.296]    [Pg.123]    [Pg.446]   
See also in sourсe #XX -- [ Pg.405 ]



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