Scale of Homogeneous Mixing in Miscible Blends of Organosolv Lignin Esters with Poly(ϵ-caprolactone)

2010 ◽  
Vol 30 (4) ◽  
pp. 330-347 ◽  
Author(s):  
Yoshikuni Teramoto ◽  
Seung-Hwan Lee ◽  
Takashi Endo ◽  
Yoshiyuki Nishio
Keyword(s):  
Organosolv Lignin ◽  
Miscible Blends

scholarly journals Molar mass determination of lignins and characterization of their polymeric structures by multi-detector gel permeation chromatography

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Evamaria C. Gaugler ◽  
Wolfgang Radke ◽  
Andrew P. Vogt ◽  
Dawn A. Smith
Keyword(s):  
Molar Mass ◽  
Lithium Bromide ◽  
Gel Permeation Chromatography ◽  
Mass Determination ◽  
Organosolv Lignin ◽  
Gel Permeation ◽  
Softwood Kraft Lignin ◽  
Polymeric Structures

AbstractMolar masses, Mark-Houwink-Sakurada (MHS) exponents, and refractive index increments (dn/dc) for three lignins were determined without derivatization by multi-detector gel permeation chromatography (GPC) in dimethylformamide (DMF) with 0.05 M lithium bromide (LiBr). The lack of effectiveness of fluorescence filters on molar mass determination by GPC-multi-angle laser light scattering (MALS) was confirmed for softwood kraft lignin (Indulin AT) and revealed for mixed hardwood organosolv lignin (Alcell) as well as soda straw/grass lignin (Protobind 1000). GPC with viscometry detection confirmed that these lignins were present as compact molecules. The MHS exponent α for Indulin AT and Alcell was in the order of 0.1. Additionally, the intrinsic viscosity of Protobind 1000 for a given molar mass was much lower than that of either Alcell or Indulin AT. This is the first report of dn/dc values for these three lignins in DMF with 0.05 M LiBr.

Miscible blends of poly(ethylene oxide) with brush copolymers of poly(vinyl alcohol)-graft -poly(l -lactide)

2016 ◽  
Vol 54 (13) ◽  
pp. 1217-1226 ◽  
Author(s):  
Ainhoa Lejardi ◽  
Jose-Ramon Sarasua ◽  
Agustin Etxeberria ◽  
Emilio Meaurio
Keyword(s):  
Ethylene Oxide ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Miscible Blends ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Microheterogeneity in miscible blends of 1,2-polybutadiene and 1,4-polyisoprene

1992 ◽  
Vol 25 (13) ◽  
pp. 3454-3461 ◽  
Author(s):  
J. Roovers ◽  
P. M. Toporowski
Keyword(s):  
Miscible Blends

Self-hydrogen transfer hydrogenolysis of β-O-4 linkages in lignin catalyzed by MIL-100(Fe) supported Pd–Ni BMNPs

2017 ◽  
Vol 19 (19) ◽  
pp. 4538-4543 ◽  
Author(s):  
Jia-wei Zhang ◽  
Guo-ping Lu ◽  
Chun Cai
Keyword(s):  
Hydrogen Transfer ◽  
Catalytic Performance ◽  
Model Compounds ◽  
Lignin Model Compounds ◽  
Organosolv Lignin ◽  
Lignin Model ◽  
Intramolecular Transfer ◽  
Supported Pd

A MIL-100(Fe) supported Pd–Ni BMNP catalyst has been fabricated, and the catalyst exhibits superior catalytic performance toward intramolecular transfer hydrogenolysis of lignin model compounds and organosolv lignin.

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