Sun, Zhonghe; Mi, Xing; Yu, Yanan; Shi, Wencheng; Feng, Anchao; Moad, Graeme; Thang, San H. published the artcile< ""All-PVC"" Flexible Poly(vinyl Chloride): Nonmigratory Star-Poly(vinyl Chloride) as Plasticizers for PVC by RAFT Polymerization>, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is PVC flexible polyvinyl chloride polyvinyl plasticizer RAFT polymerization.
Xanthate-mediated RAFT polymerization has been used to prepare 3-star and 4-star-poly(vinyl chloride) (star-PVC) with a number average molar mass (Mn) in the range of 1 to 7 kg mol-1. The Tg of star-PVC reduces with molar mass and with the number of arms. The star-PVC have substantially lower glass-transition temperatures (Tg) than that of linear PVC of similar Mn, with the Tg of low-molar mass 4-star-PVC being -7.4°C. The star-PVC are effective in lowering the Tg of blends with com. PVC when added at 10-30 weight % PVC. When added even at 10 weight %, they are effective in improving the ductility of PVC with an elongation at break (EB) of ~350% (4-star-PVC) and ~300% (3-star-PVC) relative to com. PVC, which is substantially higher than that for PVC conventionally plasticized with 30 weight % dioctyl phthalate under similar conditions (EB ~160%). Importantly, the star-PVC, despite their low molar mass, do not migrate from the PVC blends when tested under standard conditions. The performance of the star-PVC as non-migratory plasticizers for PVC demonstrates the potential for an “”all-PVC”” flexible PVC.
Macromolecules (Washington, DC, United States) published new progress about Ductility. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Recommanded Product: (9Z,12Z)-Methyl octadeca-9,12-dienoate.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics