The average life span of knee prosthesis used in Total Knee Replacement (TKR) is approximately 10 to 15 years. Literature indicates that the reasons for implant failures include wear, infection, instability, and stiffness. However, the majority of failures are due to wear and tear of the prosthesis. The most common biopolymer used in TKR  is Ultra High Molecular Weight Polyethylene (UHMWPE). Pr...

to compensate for some inferior properties of recycled papers, application of processing chemical aids such as chitosan can be quite effective in the wet end section of papermaking. in this study, the performance of chitosan biopolymer, individually or associated with nanobentonite was investigated as wet end additive on recycling process of white cuttings. for this purpose, the performance of ...

A sequence of single femtosecond pulses is used to create a pattern of laser affected spots at increasing depths below the surface of transparent biopolymer samples. Materials with different water contents and mechanical strengths, gelatine, chitosan, synthetic polyvinyl pyrrolidone, and biopolymer-polymer blends, are irradiated near the edge of the sample with an amplified Titanium:Sapphire la...

16 Cellulose, the major constituent of all plant materials and the most abundant 17 organic molecule on the Earth, is a linear biopolymer of glucose molecules, connected 18 by β-1,4-glycosidic bonds. Enzymatic hydrolysis of cellulose requires mixtures of 19 hydrolytic enzymes including endoglucanases, exoglucanases (cellobiohydrolases) and 20 β-glucosidases acting in a synergistic manner. In bi...

Recent experimental results from ultra-small-angle neutron and X-ray scattering (USANS and USAXS) studies of complex fluids, including colloidal dispersions, colloidal glasses, polymer blends, and biopolymer gels, are reviewed. We focus on data analysis and interpretation in the low q regime. New notable results include the apparent existence of large-scale structure in attractive colloidal gla...

This paper focuses on the developing a mechanistic model of the biopolymerization process and linking with the feedforward neural network model to obtain a hybrid model of lipase-catalyzed ring-opening polymerization of ε-caprolactone (ε-CL) for Poly (ε-caprolactone) PCL production using feed forward neural networks and control using model predictive control. Model predictive control (MPC) has ...

Eumelanin biopolymer synthetized from L-DOPA has been characterized by Raman and Surface Enhanced Raman Spectroscopy (SERS). Although Raman spectra of eumelanin were scarcely resolved, SERS measurements of this biopolymer on nanostructured gold substrate, provided a large enhancement of vibrational peaks related to functional groups adherent to the substrate, so that well resolved vibrational s...