draw the structure of 3 7 dimethyl 4 nonyne
Polymer Journal (1988) 20, 1125-1133; doi:10.1295/polymj.20.1125
Mineo Watase1 and Katsuyoshi Nishinari2
DSC and activating viscoelastic abstracts were agitated out for agarose–DMSO–water gels in adjustment to analyze the affiliation amid the anatomy and gelling backdrop of agarose. Gelling adeptness showed a best at DMSO absorption of 0.277 mol atom (mf). It is appropriate that DMSO molecules collaborate acerb with baptize molecules and as a aftereffect the able absorption of agarose increases with accretion absorption of DMSO up to 0.277 mf. Then, the gelling adeptness increases with accretion absorption of DMSO. Beyond this absorption of DMSO, the chargeless DMSO, which has aerial abandoning power, increases, and again the accumulation of alliance zones is inhibited. Thus, the gelling adeptness decreases with accretion absorption of DMSO. At a absorption of DMSO of 0.277 mf, the cardinal and structures of alliance zones and the anatomy of adjustable alternation molecules abutting alliance zones are optimized to accord maxima of the adaptable modulus, the melting temperature and endothermic enthalpy of melting. The gel absolute 0.277 mf DMSO showed no melting endothermic DSC aiguille back acrimonious from −100°C.
Agarose; Dimethyl Sulfoxide; Differential Scanning Calorimetry; Activating Young’s Modulus
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