Long-chain polyacetals from plant oils.
Plant oil-derived α,ω-diacetals are polycondensated to the novel polyacetals [OCH(2) O(CH(2))(y)](n) (y = 19 and 23) with molecular weight of ca. M(n) = 2 × 10(4) g mol(-1). The long methylene sequences provide substantial melt and crystallization temperatures (T(m) = 88 °C and T(c) = 68 °C for y = 23), and rates of hydrolytic degradation are dramatically lower for the long-chain polyacetals versus a shorter chain analogue (y = 12) studied for comparison.
Chair of Chemical Materials Science, Department of Chemistry, University of Konstanz, 78464 Konstanz, Germany.
Samir
S
Chikkali
Florian
F
Stempfle
Stefan
S
Mecking
D000080:Acetals / Q000138:chemical synthesis* / Q000737:chemistry; D007700:Kinetics; D015394:Molecular Structure; D010938:Plant Oils / Q000737:chemistry*; D058105:Polymerization; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry
D000080:Acetals; D010938:Plant Oils; D011108:Polymers; C016067:polyacetal