نتایج جستجو برای: melt processing

تعداد نتایج: 514982  

Journal: :Biomacromolecules 2003
Cláudia M Vaz Patrick F N M van Doeveren Rui L Reis António M Cunha

The aim of this study was to develop new soy protein drug delivery matrix systems by melt-processing techniques, namely, extrusion and injection moulding. The soy matrix systems with an encapsulated drug (theophylline, TH) were previously compounded by extrusion performed at two different pH values, (i) pH 4 (SIpDtp) and (ii) pH 7 (SIDtp), and further injection-moulded into a desired shape. Dur...

2011
Zoe Yunxie Wu Robert G. Hill Julian R. Jones

We were able to produce the first ever meltderived bioactive glass scaffold that met the requirement of an ideal bone scaffold by using the gel-cast foaming process and a new glass composition. However, initially a small fraction of sodium potassium sulfate crystals formed during processing. The purpose of this work was to study and prohibit the growth of those crystals, which was the result of...

Journal: :Metals 2022

The search for more efficient methods degassing aluminum alloy melts has always been of great interest the metal industry because presence hydrogen and oxides in melts’ prior casting was detrimental to integrity properties final products. In this work, we present an overview progress key findings from research development innovative High Shear Melt Conditioning (HSMC) technology during Liquid M...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده مهندسی نساجی 1385

در این تحقیق، رفتار نخ پلی امید 6 نوریس اصلاح شده توسط یک افزودنی چند منظوره با نام تجاری nylostab see-d در فرایند تکسچرایزینگ بررسی شد. برای بررسی تأثیر افزودنی 4 نمونه نخ نوریس با آرایش یافتگی کم با 4 درصد وزنی مختلف از افزودنی(0 ،6/0، 2/1و 4/2) تولید و سپس با دو روش پی در پی وهمزمان تحت عملیات تکسچرایزینگ قرار گرفت سپس، خواص مکانیکی (استحکام، درصد ازدیاد طول تا حد پارگی، مدول و کار تا حد پار...

2011
Cameron Campbell Johnson

PURPOSE To report a case of corneal melting in a patient with fornix foreshortening being treated with reformulated generic diclofenac. METHODS Case report. RESULTS An asymptomatic 76-year old man presented with central corneal melting while being treated with reformulated generic diclofenac. This formulation did not contain the vitamin E derivative, tocophersolan, which has been felt to co...

2017
Vadim Igal Yael Sara Pikkel Igal Yoav Yechezkel Pikkel

We present the case of a young male that suffered from fungal corneal abscess and corneal melting. The patient was treated successfully by corneal cross-linking. Taking into account our experience from this case, we offer to consider corneal cross-linking as a therapeutic option in cases of fungal keratitis.

Journal: :Scientific reports 2016
Dongyu Bai Huili Liu Hongwei Bai Qin Zhang Qiang Fu

Stereocomplexation between enantiomeric poly(l-lactide) (PLLA) and poly(d-lactide) (PDLA) provides an avenue to greatly enhance performance of eco-friendly polylactide (PLA). Unfortunately, although the manufacturing of semicrystalline polymers generally involves melt processing, it is still hugely challenging to create high-performance stereocomplexed polylactide (sc-PLA) products from melt-pr...

Journal: :Molecular pharmaceutics 2016
Shu Li Tao Yu Yiwei Tian Colin P McCoy David S Jones Gavin P Andrews

Engineered cocrystals offer an alternative solid drug form with tailored physicochemical properties. Interestingly, although cocrystals provide many new possibilities, they also present new challenges, particularly in regard to their design and large-scale manufacture. Current literature has primarily focused on the preparation and characterization of novel cocrystals typically containing only ...

2015
Jong-Seok Park Youn-Mook Lim Young-Chang Nho

Polyurethane (PU) is a very popular polymer that is used in a variety of applications due to its good mechanical, thermal, and chemical properties. However, PU recycling has received significant attention due to environmental issues. In this study, we developed a recycling method for waste PU that utilizes the radiation grafting technique. Grafting of waste PU was carried out using a radiation ...

2011
Sandeep Singhal

Various approaches have been adopted to address this including preparation of solid dispersions and solid solutions. Hot-melt extrusion is an efficient technology for producing solid molecular dispersions with considerable advantages over solvent-based processes such as spray drying and co-precipitation. Hot-melt extrusion has been demonstrated to provide sustained, modified, and targeted drug ...

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