DeRosa, Christopher A.; Kua, Xiang Qi; Bates, Frank S.; Hillmyer, Marc A. published the artcile< Step-Growth Polyesters with Biobased (R)-1,3-Butanediol>, HPLC of Formula: 6290-03-5, the main research area is step growth polyester biobased butanediol.
We present the synthesis and characterization of polymers containing 1,3-butanediol, also known as butylene glycol. Butylene glycol (BG) can be prepared from petroleum or sugar-based feedstocks. Petrol-based BG (petrol-BG) is isolated as a racemic mixture, whereas the biobased BG from sugar that we utilized (bio-BG) is enantiopure upon purification (>99.7%). In the presence of a titanium catalyst, polyesters were prepared by transesterification polymerization between petrol- or bio-BG and various aliphatic and aromatic diacid derivatives Polymers were analyzed by size-exclusion chromatog. (SEC), 1H NMR and 13C NMR spectroscopies, thermogravimetric anal. (TGA), and differential scanning calorimetry (DSC). The synthesized polyesters were statistical in nature, according to 13C NMR spectroscopy, a result of the asym. nature of the BG-starting material. As a result, many of the polyesters were amorphous in nature with low thermal glass transitions (Tg) and no m.ps. (Tm). In many of the polyester derivatives, the racemic petrol-based and enantiopure biobased BG polymers were nearly identical in thermal performance. Differences arose in semicrystalline polyesters with long, aliphatic backbones (e.g., 1,14-tetradecanedioic acid; C14 diacid) or regioregular 4-hydroxybenzoate polyesters. This suggests the polymer microstructure (statistical vs. sequenced) and the optical activity (racemic vs. enantiopure) are important determinates in establishing the structure-property relationships in BG-containing polyesters. This work establishes synthetic protocols and the foundation for materials based on BG-containing polymers.
Industrial & Engineering Chemistry Research published new progress about Crystallization enthalpy. 6290-03-5 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H10O2, HPLC of Formula: 6290-03-5.
Referemce:
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Alcohols – Chemistry LibreTexts