Protein–polymer interaction: Transfer loading at interfacial region of PES‐based membrane and BSA

2019 ◽  
Vol 136 (36) ◽  
pp. 47931 ◽  
Author(s):  
Hamidreza Sadegh ◽  
Rahul Sahay ◽  
Shivani Soni
Keyword(s):  
Interfacial Region ◽  
Protein Polymer ◽  
Polymer Interaction

Required polymer lengths per precipitated protein molecule in protein-polymer interaction

2014 ◽  
Vol 21 (2) ◽  
Author(s):  
Florian Capito ◽  
Harald Kolmar ◽  
Bernd Stanislawski ◽  
Romas Skudas
Keyword(s):  
Protein Molecule ◽  
Protein Polymer ◽  
Polymer Interaction

Protein-Polymer Interaction Studied By Fourier Transform Infrared (FTIR)

1981 ◽  
Author(s):  
R. M. Gendreau ◽  
S. Winters ◽  
L. Lee ◽  
R. I. Leininger ◽  
R. J. Jakobsen
Keyword(s):  
Fourier Transform ◽  
Fourier Transform Infrared ◽  
Protein Polymer ◽  
Polymer Interaction

scholarly journals Rheology of carboxymethyl cellulose solutions treated with cellulases

BioResources ◽  
2007 ◽  
Vol 2 (1) ◽  
pp. 20-33
Author(s):  
Jung Myoung Lee ◽  
John A. Heitmann ◽  
Joel J. Pawlak
Keyword(s):  
Enzymatic Activity ◽  
Carboxymethyl Cellulose ◽  
Reducing Sugars ◽  
Cationic Polyelectrolyte ◽  
Rotational Viscometer ◽  
Shear Rates ◽  
Protein Polymer ◽  
Complex Protein ◽  
Polymeric Effect ◽  
Polymer Interaction

The effect of cellulase treatments on the rheology of carboxymethyl cellulose (CMC) solutions was studied using a rotational viscometer. The rheological behaviors of CMC solutions of different molecular mass and degrees of substitution where studied as a function of time after various treatments. These solutions were subjected to active and heat-denatured cellulase, a cationic polyelectrolyte (C-PAM), as well as different shear rates. A complex protein-polymer interaction was observed, leading to a potential error source in the measurement of enzymatic activity by changes in the intrinsic viscosity. The interaction was termed a polymeric effect and defined as a reduction in viscosity of the substrate solution without significant formation of reducing sugars from enzymatic hydrolysis. The cause of the reduction in viscosity appears to be related to the interaction between the enzymes as amphipathic particles and the soluble CMC. Thus, the polymeric effect may cause a considerable experimental error in the measurement of enzymatic activity by viscometric methods.

The influence of heat treatment on the fiber/matrix interface in a SiC-reinforced glassceramic

1988 ◽  
Vol 46 ◽  
pp. 742-743
Author(s):  
E. Bischoff ◽  
O. Sbaizero
Keyword(s):  
Heat Treatment ◽  
Aluminum Silicate ◽  
Lithium Aluminum ◽  
Interfacial Region ◽  
Specimen Preparation ◽  
Crack Wake ◽  
Pull Out ◽  
Annealed Material ◽  
Ultrasonic Drilling ◽  
Fiber Matrix Interface

Fiber or whisker reinforced ceramics show improved toughness and strength. Bridging by intact fibers in the crack wake and fiber pull-out after failure contribute to the additional toughness. These processes are strongly influenced by the sliding and debonding resistance of the interfacial region. The present study examines the interface in a laminated 0/90 composite consisting of SiC (Nicalon) fibers in a lithium-aluminum-silicate (LAS) glass-ceramic matrix. The material shows systematic changes in sliding resistance upon heat treatment.As-processed samples were annealed in air at 800 °C for 2, 4, 8, 16 and 100 h, and for comparison, in helium at 800 °C for 4 h. TEM specimen preparation of as processed and annealed material was performed with special care by cutting along directions having the fibers normal and parallel to the section plane, ultrasonic drilling, dimpling to 100 pm and final ionthinning. The specimen were lightly coated with Carbon and examined in an analytical TEM operated at 200 kV.

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