Polymeric Membranes Lab Report
Abstract New copolymeric membranes was offered for the efficient delivery of antibiotic drug using the synthesized chitosan–copoly(semicarbazide–formaldehyde–phenylhydrazine) blend membranes. The membranes were prepared by solution casting technique and characterized by elemental, spectral and scanning electron microscopy to establish the chemical structure and morphology. Scanning electron microscopy clearly reveals that the increased porosity in the polymeric network enables rapid swelling; leads to faster diffusion which facilitates effective drug release. The composition of chitosan content also governs the swelling behavior i.e. increased chitosan content showed excellent swelling behavior leads to profound drug delivery. The drug delivery results clearly indicates that the chitosan and its blend membranes have effectively released the antibiotic drug in a short time and proved to be a promising candidate for the drug delivery. The kinetic study of the drug release profile clearly establishes that the drug release is very well fit with the Higuchi model and also follows swelling and …show more content…
The reaction mixture was then cooled and poured into crushed ice with constant stirring and left overnight. A dark red coloured copolymer was obtained and washed with warm water, methanol and acetone followed by filtration to remove unreacted monomers and impurities. Finally, the copolymer was dried in an air oven at 75 °C for 24 h. The yield of the copolymer was found to be 85%. The copolymer was found to be soluble in solvents like dimethylsulphoxide, dimethylformamide and tetrahydrofuran and partially soluble in mineral acids. The mechanism of the synthesis of copolymer (SFP) is shown in Scheme
Pt1420 Unit 2 Lab Report Sample
695 Words | 3 PagesFrom the data obtained in Tables 1-3, we were able to plot multiple graphs using excel. These graphs give a better representation of the data as seen in Figures 1-9. It can be seen that each figure shows a slight increase in CO2 production, which signifies a possible change in metabolic rate. Figures 4 and 7 show a relatively large change between the control and fox urine. The changes in slope between theses two are 0.0267 for Figure 4’s slopes and 0.0192 for Figure 7’s slopes.
Pt1420 Unit 6 Lab Report
155 Words | 1 PagesSuppose you need to find the fractional European call and the fractional European put options. Let the Hurst parameter be $H=0.85$, the $\sigma=0,25$, $r=0.10$, $S_{fbm} = 100$, $K = 95$, we have \begin{eqnarray*} d_1^{fBm} & = & \frac{\ln{\frac{S}{K}} + \frac{1}{2}(r( T - t) + \frac{(1)\sigma^2{( T^{2H} - t^{2H})}}{2})}{\sigma{\sqrt{T^{2H} - t^{2H}}}}\\ & = & \frac{\ln(\frac{105}{100}) + (0.10(0.25 -0) + \frac{(1){0.25^2}{0.25^{2(0.85)} - (1)0.25^{2(0.85)}}}{2}}{(0.25){\sqrt{0.25^{2(0.85)} - 0}})} \end{eqnarray*} we obtain $d^{fBm}_1= 1.0558$. We find in the normal distribution that $N(1.0558)= 0.8544$ and $N(-1.0558) = 0.1456.$
Pt1420 Unit 3 Lab Report
485 Words | 2 PagesTesting phase finds differences in positive/negative documents by the centroid obtained in training phase by ranking each of them. The simple way to estimate similarity between documents and centroid by summing weights of patterns which are in the documents. VII. Experimental Results To determine accurate measures of similarity or difference between documents you depict results by graph pattern and table pattern. The experimental setup consists of relevant documents that you termed as positive and negative documents .i.e
Bio 101 Lab Report
602 Words | 3 PagesName: Avishak Deb Roy Partners: Leevell Penn, Varugh, Butler Bio 101 Lab Report #1 02.22.2018 Swimming speed of paramecium tetraurelia in different levels of treatment. Introduction Paramecia is a unicellular Protista which are naturally found in aquatic habitats. It is easily cultured in the laboratory. It is oblong shaped and covered with short hairy structure called cilia. Paramecia does not pose any health or ethical concerns and the population can be maintained if there is a food source such as Enterobacter (Biological Foundation 7).
Lab Report Chemistry Lab
728 Words | 3 PagesThe lab started off by measuring critical materials for the lab: the mass of an an empty 100 mL beaker, mass of beaker and copper chloride together(52.30 g), and the mass of three iron nails(2.73 g). The goal of this experiment is to determine the number of moles of copper and iron that would be produced in the reaction of iron and copper(II) chloride, the ratio of moles of iron to moles of copper, and the percent yield of copper produced. 2.00 grams of copper(II) chloride was added in the beaker to mix with 15 mL of distilled water. Then, three dry nails are placed in the copper(II) chloride solution for approximately 25 minutes. The three nails have to be scraped clean by sandpaper to make the surface of the nail shiny; if the nails are not clean, then some unknown substances might accidentally mix into the reaction and cause variations of the result.
Tetraphenylnaphthalene Lab Report
779 Words | 4 PagesBenzyne Formation and the Diels-Alder Reaction Preparation of 1,2,3,4 Tetraphenylnaphthalene Aubree Edwards Purpose: 1,2,3,4-tetraphenylnaphthalene is prepared by first producing benzyne via the unstable diazonium salt. Then tetraphenylcyclopentadienone and benzyne undergo a diels-alder reaction to create 1,2,3,4-tetraphenylnaphthalene. Reactions: Procedure: The reaction mixture was created. Tetraphenylcyclopentadienone (0.1197g, 0.3113 mmol) a black solid powder, anthranilic acid ( 0.0482g, 0.3516 mmol) a yellowish sand, and 1,2-dimethoxyethane (1.2 ml) was added to a 5-ml conical vial.
Resting Membrane Potential Lab Report
1566 Words | 7 PagesRESTING MEMBRANE POTENTIAL When the neuron is not sending a signal at rest the membrane potential called as resting membrane potential. In this stage, permeability of K+ much greater than Na+ When a neuron is at rest, the inside of the neuron is negative relative to the outside. Although the concentrations of the different ions endeavor to balance out on both sides of the membrane, they cannot because the cell membrane sanctions only some ions to pass through channels (ion channels). At rest, potassium ions (K+) can cross through the membrane facilely. Additionally at rest, chloride ions (Cl-) and sodium ions (Na+) have a more arduous time crossing.
Tn 4351 Unit 5 Lab Report
506 Words | 3 PagesTn 4351 was originally isolated from bacteroides fragilis [30] . The transposon was successfully introduced into Cytophaga succinicans, Flavobacterium meningosepticum, Flexibacter canadiansis, Flexibacter strain SFI and Sporocytophaga myxococcoides by conjugation [25]. Tn 4351carries two antibiotic resistance gene. One of the codes for resistance to erythromycin and clindamycin which is expressed in bactroides but not in E.Coli. The other gene codes for resistance in tetracycline and is expressed in aerobically grpwn E. coli, but not in anaerobically grpwn E. coli or in bacteroides.
Pt1420 Unit 6 Lab Report
407 Words | 2 Pages• Write down the highlighted numbers. Do you observe a pattern? • Does the pattern grow? What is the reason for this? • Write down the last number (say 53).
Biology Unit 9
313 Words | 2 PagesElijah Brycth B. Jarlos IX-Argon 1. Multicellularity is a condition of an organism to have multicellular cells. An example of a organism who has multicellular cells are plants, animals, and humans. The main reason of why scientists have a hard time finding a good set of existing organisms to compare. Is neither the first set of organisms which is being compared is dying as fast as the second specimen is being examined or they just can’t find the right species.
Diffusion And Osmosis Lab Report
819 Words | 4 PagesDiffusion and Osmosis Lab Report By: Jettica Williams BIOL 1107 Lab September 21, 2016 Prepared for Mrs. Fulford Lab Course Page Break The cell membrane act as a roadblock for cells. The cell membrane has a very hectic job. It restricts the access to what comes in and what goes out. The bond the membrane shares with others is the idea of accountability.
Biological Membranes Lab Report
1621 Words | 7 PagesThe effects of alcohol on Biological Membranes. Introduction In this experiment it will be analysed the damage alcohols can have on biological membranes. Membranes are made up of lipids and proteins. Membranes usually help maintain the balance in a cell as it holds all the cellular materials.
Buccal Disease Essay
713 Words | 3 PagesObjective: Amongst the various routes of drug delivery for curing the buccal disease, mucoadhesive disc is one of them. The aim of this work was to design a mucoadhesive disc and formulation studies. Material&Methods: Discs containing 10% stem bark extract of ziziphus jujuba were formulated by Zinc Oxide, Glycerin, Carbopol 34, PVP K30 and Gelatin as excipients. These materials were mixed and changed to granules and then discs through direct compression. Properties such as in vitro and in vivo mucoadhesion, drug release, water uptake, disintegration were carried out.
Aliphatic Polyester Research Paper
2087 Words | 9 Pageset al., 2002) the key strategy to synthesize well-defined block copolymers. Anionic polymerization is characterized by having less termination and chain transfer reactions, carbanions (or, generally speaking, anionic sites) remain active after complete use of monomer, giving the possibility of block copolymer formation, within the simplest case, by introduction of your second monomer in the polymerization mixture giving potential for the preparation of linear block copolymers. For examples, AB diblock copolymers of styrene and isoprene or butadiene, with predictable composition and molecular weights in addition to narrow molecular weight have been synthesized by sequential addition of
Essay On Swelling
1284 Words | 6 Pages3. Swelling Capacity Swelling is one of the distinctive physical properties of the gel copolymer, which is related to the ability to absorb water. The gel ability to absorb water is influenced by the present of free functional groups in the copolymer, such as -OH, -NH2, and -SO3H and can also be influenced by the environment, for example, the alteration in pH, temperature, and electrical current (Erizal et, al., 2002). Swelling properties that is possessed by this gel copolymer can be used as a determination of the swelling ability of the copolymer, which is based on the value of swelling ratio until the maximum limit gel to swells in particular immersion time.
More about Polymeric Membranes Lab Report
Pt1420 Unit 2 Lab Report Sample
695 Words | 3 PagesPt1420 Unit 6 Lab Report
155 Words | 1 PagesPt1420 Unit 3 Lab Report
485 Words | 2 PagesBio 101 Lab Report
602 Words | 3 PagesLab Report Chemistry Lab
728 Words | 3 PagesTetraphenylnaphthalene Lab Report
779 Words | 4 PagesResting Membrane Potential Lab Report
1566 Words | 7 PagesTn 4351 Unit 5 Lab Report
506 Words | 3 PagesPt1420 Unit 6 Lab Report
407 Words | 2 PagesBiology Unit 9
313 Words | 2 PagesDiffusion And Osmosis Lab Report
819 Words | 4 PagesBiological Membranes Lab Report
1621 Words | 7 PagesBuccal Disease Essay
713 Words | 3 PagesAliphatic Polyester Research Paper
2087 Words | 9 PagesEssay On Swelling
1284 Words | 6 Pages