Melt Rheology of Poly( lactic acid): Consequences of Blending Chain Architectures

By Hans J. Lehermeier, J. Dorgan. 2001

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Rheology of poly (lactic acid)-based systems (2019, background): “Tris(nony1- phenyl) phosphite (TNPP) The influence of tris(nony1-phenyl) phosphite (TNPP) as a chain extender was explored in very early studies by Dorgan and his coworkers.(25,26) They showed that the addition of 0.”
Branched polyesters: recent advances in synthesis and performance (2005, background): “Lehermeier and Dorgan studied the influence of blending linear polylactide and polylactides that were randomly branched through a peroxide cross-linking reaction on the melt rheological properties [71].”
Properties and medical applications of polylactic acid: A review (2015, background): “Viscosity curve of PLA at 180°C showing shear viscosity as a function of shear rate [26]”
Nanocomposites of poly(lactic acid) reinforced with cellulose nanofibrils (2010, background): “However, if two polymers are compatible, a distinct chemical interaction (a hydrogen bonding or dipolar interaction) exists between their chains, causing the IR spectra of the composites to change (e.g., band shifting and broadening) (Peng et al. 2005).”
Melt strengthening of poly (lactic acid) through reactive extrusion with epoxy-functionalized chains (2011, background): “Similar tendencies for branched polycarbonate have been reported by Liu et al. (2004). As described above for the MWD analysis, a shoulder relevant to high molar mass is generated during chain extension and get larger by increasing the CE content.”