Ree, Brian J.; Mato, Yoshinobu; Xiang, Li; Kim, Jehan; Isono, Takuya; Satoh, Toshifumi published the artcile< Topologically controlled phase transitions and nanoscale film self-assemblies of cage poly(ε-caprolactone) and its counterparts>, Related Products of 112-63-0, the main research area is polycaprolactone film phase transition counterpart thermal property.
Here we report the first quant. investigation of nanoscale film morphologies of a cage-shaped poly(ε-caprolactone) (cg-PCL9k) and its counterparts in star, cyclic, and linear topologies (st-PCL9k, cy-PCL6k, and l-PCL6k) with consideration of topol. influence through synchrotron grazing incidence X-ray scattering anal. The folded crystalline layer thickness lc is found to be in the increasing order of: st-PCL9k < l-PCL6k < cy-PCL6k< cg-PCL9k. Addnl. structural parameters, such as lamellar orientation, crystallinity, and orientation of orthorhombic lattice in nanoscale film, exhibit intricate dependencies on their mol. topologies and steric influences from the mol. joints and end groups. Nevertheless, all topol. PCLs form lamellar structures based on the orthorhombic crystal lattice in nanoscale films. In addition, crystallization temperature Tc and crystal melting temperature Tm of all PCLs in bulk are highly dependent on the mol. topol.; both Tc and Tm follow the same increasing trend of: st-PCL9k < l-PCL6k< cy-PCL6k < cg-PCL9k. Phase transition characteristics such as heat of fusion and crystallinity in bulk state, and thermal stability also depend upon the topol. and steric influences. Polymer Chemistry published new progress about Branched polymers, star-branched Role: PRP (Properties), SPN (Synthetic Preparation), PREP (Preparation). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Related Products of 112-63-0.
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Ester – Wikipedia,
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