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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 23 for “"natural polymer"”.
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Renewable Natural Polymer Thin Films and Their Interactions with Biomacromolecules
Natural polymers from renewable resources have attracted increasing interest as candidates for renewable energy and functional materials. In this work, the interactions between natural polymer thin films and biomacromolecules were studied via surface analysis techniques, such as a quartz crystal …
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Coaxial Electrospinning of Synthetic/Natural Polymer Combinations for Controlled Release of Active Components in Biomedical Applications
… advance coaxial electrospinning techniques for polymer/protein systems, targeting tissue engineering and drug delivery applications. While electrospinning is increasingly utilised in tissue engineering, challenges arise when incorporating active pharmaceutical ingredients due to solubility and …
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Coaxial Electrospinning of Synthetic/Natural Polymer Combinations for Controlled Release of Active Components in Biomedical Applications
… advance coaxial electrospinning techniques for polymer/protein systems, targeting tissue engineering and drug delivery applications. While electrospinning is increasingly utilised in tissue engineering, challenges arise when incorporating active pharmaceutical ingredients due to solubility and …
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The development of novel hybrid poly (2-oxazoline)-based bioinks for 3D bioprinting: a comparative study with Pluronic F127
… implementation and clinical transformation. Natural polymers, such as chitosan and alginate, are commonly used as bioinks due to their biocompatibility, biodegradability and similarity to extracellular matrix (ECM). These natural polymers are usually limited by their mechanical strength and …
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Natural Polymeric Carriers for Local Delivery of Therapeutic Agents to Promote Enhanced Bone Regeneration
… For this reason, we developed an alternative natural polymer rhBMP-2 carrier from keratin. Keratin can be formed into a number of biomaterials which have advantages over collagen including controlled rates of degradation, flexible material properties, and tunable rates of rhBMP-2 delivery. In …
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Extraction of Heavy Metals from Aqueous Solutions using Chitosan/Montmorillonite Hybrid Hydrogels
… based on chitosan, a biodegradable and abundant natural polymer, have received significant interest in various applications, including the removal of heavy metals from aqueous solutions. Novel chitosan (CTS)/ montmorillonite (MMT) hybrid hydrogels have been successfully developed by freeze-drying …
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Plasticized lignin-PVC blends for flooring
… materials by lignin, an abundant and renewable natural polymer. The utilization of lignin, is aimed to develop more cost-effective flooring materials with appreciable mechanical properties, to decrease their susceptibility to microbial attack, to decrease the amount of VOC's release, and to …
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Synthesis and Characterization of Crystalline Assemblies of Functionalized Hydrogel Nanoparticles
… have been synthesized on the basis of a natural polymer of hydropropylcellulose (HPC) with a high molecular weight using the precipitation polymerization method and self-assembly of these particles in water results in bright colors. The HPC nanoparticles can be potential using as …
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Magnesium doped calcium phosphate sodium alginate biocomposite for bone implant application
… application due to the similarity mineral in natural bone and it is bioactive and biocompatible material. However, CaP has low mechanical strength under load bearing condition and limited on certain application only. Therefore, sodium alginate (SA), a natural polymer is combined with CaP and …
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From iPSCs to Engineered Heart and Liver Models: Modulating Genetic and Extracellular State for Maturity
… decellularized liver ECM, and electrospun natural polymer nanofibers, substantially enhanced HLC function relative to traditional substrates, partly through modulation of YAP signaling. Complementary efforts focused on improving cardiac models. We developed subtype-specific cryopreservation …
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Development and Characterization of Tunable, Bioinspired Electrospun Constructs for Skeletal Muscle Engineering
… decellularization of skeletal muscle, the natural polymer was electrospun with varying degrees of fiber alignment and varying degrees of crosslinking. The impact of scaffold architecture and crosslinking density on fiber swelling, degradation kinetics, and mechanical properties was then …
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A Smart Solution for Tissue Engineering Applications
… depends strongly on its biocompatibility: this natural polymer is indeed non-toxic, non-carcinogenic, non-immunogenic, enzymatically degradable and bioresorbable. In the biomedical field gelatine is mostly used as highly concentrated hydrogel (with a melting point above 43 °C - 45 °C) or …
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Bio based photocurable polymers for advanced applications
… associated with conventional fossil-based polymers. Cellulose, the most abundant natural polymer, was selected as a renewable feedstock due to its availability, structural versatility, and chemical functionality, and was integrated into photocurable systems and additive manufacturing …
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Quartz Crystal Microbalance with Dissipation Monitoring Applications in Polymer Thin Films Analysis
Natural and synthetic polymers are highly related to people's daily life in every perspective and determine everyone's life quality. This study investigated the interactions between polymer thin films and other molecules, specifically natural polymer films with other components in plant and fungal …
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Regioselective Synthesis of Glycosaminoglycan Analogs
… Cellulose is an abundant and renewable natural polymer. Applications of cellulose and cellulose derivatives have drawn increasing attention in recent decades. Chemical modification is an efficient method to append new functionalities to the cellulose backbones. This dissertation …
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An investigation of the biology and chemistry of the Chinese medicinal plant, Amorphophallus konjac
… extraction and analysis of this multifunctional natural polymer.
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Physical crosslinking of gelatin : a supramolecular approach to biomaterials
… (DATT) side groups, derived from the natural amino acid tyrosine. These group can potentially undergo to π-π and hydrogen bonding interactions also under physiological conditions. Molecular dynamics (MD) simulations were performed on models with 0.8 wt.-% or 25 wt.-% water content, …
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Development and evaluation of a beta-glucan biopolymer formulation of lactoferrin produced using a novel cryomilling technique
… degradation. Although synthetic biodegradable polymers have been extensively studied in the search for better protein delivery formulation development, the use of natural biodegradable polymers in drug delivery continues to be an area of active research. In the present study, a natural polymer, …
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Core-Sheath Differentially Biodegradable Nanofiber Structures for Tissue Engineering
… for engineering tissues. Various biodegradable polymers of natural and synthetic origins have been used to construct the nanofiber scaffolds. The use of natural polymers is important in that they contain specific cell recognition sites that are capable of binding cells. Synthetic biodegradable …
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Pressure Variation Assisted Fiber Extraction and Development of High Performance Natural Fiber Composites and Nanocomposites
… when such particles are incorporated into a polymer matrix. There is also a trend of utilizing natural resources or reusing and recycling materials that are already available for the fabrication of the new composite materials. Cellulose is the most abundant natural polymer on the planet, and …
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