Linear Polymer
... A pendant group on a polymer is a small group of atoms (even a small chain sometimes) that hangs off of the main chain (that is, the backbone of the polymer). ...
... A pendant group on a polymer is a small group of atoms (even a small chain sometimes) that hangs off of the main chain (that is, the backbone of the polymer). ...
Scleroglucan: A Versatile Polysaccharide for Modified Drug Delivery
... polymers gave hydrogels, i.e. systems capable to swell in aqueous medium to a different extent: therefore their structure together with their suitability as matrices for controlled delivery of bioactive materials were studied. In particular, the hydrogel obtained from sclerox [39] using hexamethylen ...
... polymers gave hydrogels, i.e. systems capable to swell in aqueous medium to a different extent: therefore their structure together with their suitability as matrices for controlled delivery of bioactive materials were studied. In particular, the hydrogel obtained from sclerox [39] using hexamethylen ...
Week 10 Day 2-Plastics - Washington State University
... Semicrystalline Polymers • Some semicrystalline polymers form spherulite structures • Alternating chain-folded crystallites and amorphous regions • Spherulite structure for relatively rapid growth rates Spherulite surface ...
... Semicrystalline Polymers • Some semicrystalline polymers form spherulite structures • Alternating chain-folded crystallites and amorphous regions • Spherulite structure for relatively rapid growth rates Spherulite surface ...
Chemistry 595: Physical Chemistry of Polymers
... topic, go to literature and learn about the current state of knowledge in that topic. Write a ~6-8 pages paper describing what you learned, formulating the major challenges and important problems in this topic. You will also present a ~15 minutes talk on the material during the last weeks of classes ...
... topic, go to literature and learn about the current state of knowledge in that topic. Write a ~6-8 pages paper describing what you learned, formulating the major challenges and important problems in this topic. You will also present a ~15 minutes talk on the material during the last weeks of classes ...
Protein sorption on soft contact lenses: a comparison between
... ionic charge of the lens material, as deduced from few investigations reported in literature. Furthermore, ionic material containing more than 50% water (IV FDA group) show higher protein adsorption. Besides the ionicity there was evidence that all those lenses, able to adsorb the lowest protein qua ...
... ionic charge of the lens material, as deduced from few investigations reported in literature. Furthermore, ionic material containing more than 50% water (IV FDA group) show higher protein adsorption. Besides the ionicity there was evidence that all those lenses, able to adsorb the lowest protein qua ...
Pharmacokinetics Demonstrating Sustained Dexamethasone
... Purpose: To examine the dose-dependent pharmacokinetics of dexamethasone delivered from a biodegradable hydrogel punctum plug in a canine model. Methods: Micronized dexamethasone (Dex) was suspended in a multi-arm PEG solution at two different levels (high and low dose) and injected into small bore ...
... Purpose: To examine the dose-dependent pharmacokinetics of dexamethasone delivered from a biodegradable hydrogel punctum plug in a canine model. Methods: Micronized dexamethasone (Dex) was suspended in a multi-arm PEG solution at two different levels (high and low dose) and injected into small bore ...
http://www.uakron.edu/cpspe/documents/faculty-profiles/FacultyProfile-Becker.pdf
... Professor of Polymer Science & Biomedical Engineering ...
... Professor of Polymer Science & Biomedical Engineering ...
NIH Public Access - Khademhosseini Lab
... elastomeric hydrogels. For example, more than 900% and 500% increases in tensile strength and elongation, respectively, were observed due to the addition of the GPO (3 mg/mL) compared with conventional polymeric hydrogels. This approach can be used to fabricate elastomeric scaffolds for tissues that ...
... elastomeric hydrogels. For example, more than 900% and 500% increases in tensile strength and elongation, respectively, were observed due to the addition of the GPO (3 mg/mL) compared with conventional polymeric hydrogels. This approach can be used to fabricate elastomeric scaffolds for tissues that ...
Document
... • Bioadhesion can be defined as the ability of a drug carrier system (synthetic or biological) to adhere to a biological substrate for an extended period of time. •The biological surface can be epithelial tissue (skin) or the mucous coat on the surface of a tissue. •If the adhesive attachment is to ...
... • Bioadhesion can be defined as the ability of a drug carrier system (synthetic or biological) to adhere to a biological substrate for an extended period of time. •The biological surface can be epithelial tissue (skin) or the mucous coat on the surface of a tissue. •If the adhesive attachment is to ...
Kennemur - FSU Faculty Profile
... Block polymers contain two or more chemically distinct polymer segments that are covalently attached at one end. If the two segments are incompatible, (i.e. one is hydrophobic and the other hydrophilic) the segments want to completely phase separate but cannot due to their covalent attachment. A com ...
... Block polymers contain two or more chemically distinct polymer segments that are covalently attached at one end. If the two segments are incompatible, (i.e. one is hydrophobic and the other hydrophilic) the segments want to completely phase separate but cannot due to their covalent attachment. A com ...
Self-Healing Materials Research
... Inspired by biological processes in which damage triggers an autonomic healing response, their work has used encapsulated microcapsules and microvascular networks as methods for generating self-healing in a polymer material and, in a recent research line, in electrical energy storage systems, includ ...
... Inspired by biological processes in which damage triggers an autonomic healing response, their work has used encapsulated microcapsules and microvascular networks as methods for generating self-healing in a polymer material and, in a recent research line, in electrical energy storage systems, includ ...
g as an injectable scaffold for local delivery of neurotrophins and... transplants into the injured spinal cord
... poly(N-isopropylacryalmide) (PNIPAAm), lightly crosslinked with poly(ethylene glycol) (PEG), to serve as a scaffold in an in vivo rodent model of SCI. This hydrogel provides structural support and can be injected as a viscous liquid into an injury site, where it transitions to form a spacefilling ge ...
... poly(N-isopropylacryalmide) (PNIPAAm), lightly crosslinked with poly(ethylene glycol) (PEG), to serve as a scaffold in an in vivo rodent model of SCI. This hydrogel provides structural support and can be injected as a viscous liquid into an injury site, where it transitions to form a spacefilling ge ...
Polymer Properties and Structure
... Polymers are large molecules made by concatenation of many small units ...
... Polymers are large molecules made by concatenation of many small units ...
Mechanical monitoring of the degradation of hydrogels
... the mechanical testing of the biomaterial. ElastoSensTM BIO2 is particularly suitable for mechanical characterization of gel formation and degradation kinetics. Its versatility and unique technical features make it a very useful research and quality control tool in pharmacology, tissue engineering a ...
... the mechanical testing of the biomaterial. ElastoSensTM BIO2 is particularly suitable for mechanical characterization of gel formation and degradation kinetics. Its versatility and unique technical features make it a very useful research and quality control tool in pharmacology, tissue engineering a ...
Biomaterials Based on Polymers, Fibers, and Textiles
... between the positive and negative charges of the ions. In aqueous solutions, all cations and anions are surrounded by a shell of water molecules bound . Increasing the salt (eg NaCl ) concentration weakens the ionic bonds . Binding energy about 787 kJ / mol ( NaCl ) ...
... between the positive and negative charges of the ions. In aqueous solutions, all cations and anions are surrounded by a shell of water molecules bound . Increasing the salt (eg NaCl ) concentration weakens the ionic bonds . Binding energy about 787 kJ / mol ( NaCl ) ...
Who needs an artificial cornea?
... fibroblast cells grown on PEGacrylate/PAA Hydrogel tethered with A)Control, B) Collagen, C)Fibronectin, D)Laminin and E) 1:1 mixture of collagen and Fibronectin. ...
... fibroblast cells grown on PEGacrylate/PAA Hydrogel tethered with A)Control, B) Collagen, C)Fibronectin, D)Laminin and E) 1:1 mixture of collagen and Fibronectin. ...
Hydroxyapatite/Nanodiamond Hydrogels as Potential Materials for
... to allow continuous tissue in growth, and transport properties to allow the influx of nutrients and elimination of waste products [6]. Randomly positioned pores contribute to better cell seeding and better cell aggregation in the designed scaffolds [7]. Natural scaffolds like collagen type I, chitosa ...
... to allow continuous tissue in growth, and transport properties to allow the influx of nutrients and elimination of waste products [6]. Randomly positioned pores contribute to better cell seeding and better cell aggregation in the designed scaffolds [7]. Natural scaffolds like collagen type I, chitosa ...
19th May 2015 - Prof Robert Brown
... Rapid fabrication of real (albeit simple) living tissues by collagen plastic compression is now an established technology. It is unique since the constructs are engineered in minutes yet are genuine living tissues, comprising viable cells (one or many types) embedded within specific zones of a nativ ...
... Rapid fabrication of real (albeit simple) living tissues by collagen plastic compression is now an established technology. It is unique since the constructs are engineered in minutes yet are genuine living tissues, comprising viable cells (one or many types) embedded within specific zones of a nativ ...
HYDROGELS AS A DRUG DELIVERY SYSTEM AND APPLICATIONS: A REVIEW
... Hydrogels are crosslinked hydrophilic polymers capable of imbibing large volume of water but insoluble in water because of their network structure. Hydrogels are hydrophilic polymer networks which may absorb from 10–20% up to thousands of times their dry weight in water. Hydrogels may be chemically ...
... Hydrogels are crosslinked hydrophilic polymers capable of imbibing large volume of water but insoluble in water because of their network structure. Hydrogels are hydrophilic polymer networks which may absorb from 10–20% up to thousands of times their dry weight in water. Hydrogels may be chemically ...
Living cells can sense their physical
... stem cells (ESCs) in poly ethylene glycol diacrylate (PEGDA) hydrogels. These hydrogels are being fabricated using a three dimensional printer - stereolithography apparatus (SLA). SLA offers several advantages like multi-cell, multi-material fabrication and capability to encapsulate cells during the ...
... stem cells (ESCs) in poly ethylene glycol diacrylate (PEGDA) hydrogels. These hydrogels are being fabricated using a three dimensional printer - stereolithography apparatus (SLA). SLA offers several advantages like multi-cell, multi-material fabrication and capability to encapsulate cells during the ...
HyStem Hydrogels for Stem Cell Research
... HyStem hydrogels over other matrices, is that they are easily customizable. Generally, stem cells depend on specific ECM components to grow and differentiate. To affect specific cell performance, components such as growth factors or ECM proteins can easily be incorporated covalently or non-covalentl ...
... HyStem hydrogels over other matrices, is that they are easily customizable. Generally, stem cells depend on specific ECM components to grow and differentiate. To affect specific cell performance, components such as growth factors or ECM proteins can easily be incorporated covalently or non-covalentl ...
Photo cross-linkable poly(N-isopropylacrylamide) copolymers III: micro-fabricated temperature responsive hydrogels
... polymers has been published [19 –24]. The cross-linking reaction has been performed typically by photodimerization of hydrophobic chromophores. However, when incorporated in a temperature-sensitive polymer, these substituents produce a strong decrease in the phase transition temperature (Tc). Due to ...
... polymers has been published [19 –24]. The cross-linking reaction has been performed typically by photodimerization of hydrophobic chromophores. However, when incorporated in a temperature-sensitive polymer, these substituents produce a strong decrease in the phase transition temperature (Tc). Due to ...
Self-healing hydrogels
Self-healing hydrogels are a specialized type of polymer hydrogel. A hydrogel is a macromolecular polymer gel constructed of a network of crosslinked polymer chains. Hydrogels are synthesized from hydrophilic monomers by either chain or step growth, along with a functional crosslinker to promote network formation. A net-like structure along with void imperfections enhance the hydrogel's ability to absorb large amounts of water via hydrogen bonding. As a result, hydrogels, self-healing alike, develop characteristic firm yet elastic mechanical properties. Self-healing refers to the spontaneous formation of new bonds when old bonds are broken within a material. The structure of the hydrogel along with electrostatic attraction forces drive new bond formation through reconstructive covalent dangling side chain or non-covalent hydrogen bonding. These flesh-like properties have motivated the research and development of self-healing hydrogels in fields such as reconstructive tissue engineering as scaffolding, as well as use in passive and preventive applications.