scholarly journals EFFECTIVE COMMERCIAL ADDITIVES FOR IMPROVING POLY- PROPYLENE FIBRES PROPERTIES BY THE MELT EXTRUSION PROCESS

2010 ◽  
Vol 21 (Issue 1-A) ◽  
pp. 249-267
Keyword(s):  
Extrusion Process ◽  
Melt Extrusion ◽  
Poly Propylene

Preparation and characterization of poly(propylene carbonate)/polystyrene composite films by melt-extrusion method

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
Liu Huihong ◽  
Pan Lisha ◽  
Lin Qiang ◽  
Xu Nai ◽  
Lu Lingbin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Propylene Carbonate ◽  
Composite Films ◽  
Extrusion Process ◽  
Melt Extrusion ◽  
Aliphatic Polycarbonate ◽  
Wide Range ◽  
Poly Propylene ◽  
Extrusion Technology

AbstractPoly(propylene carbonate) (PPC) is a new biodegradable aliphatic polycarbonate with poor thermal stability and mechanical properties which shows difficulty in forming film by melt-extrusion technology. Through the addition of polystyrene (PS), the melt-extrusion film processability, thermal stability and mechanical properties of PPC was improved largely. PPC/PS films were prepared in the the melt-extrusion process successfully. DSC data showed that there was some degree of miscibility between PPC and PS. SEM showed good dispersion of PS particles into PPC matrix. Improved mechanical properties and thermal stability of PPC/PS blends were attributed to homogeneous dispersing and stronger interfacial interaction of PS and PPC. These results indicate that blending PPC with PS is an efficient and convenient method to improve the properties of PPC, and the composites can be used as a common packaging material for a wide range of applications.

The Effect of Melt Extrusion Process Parameters on Rotary-Evaporated Poly(propylene) Nanocomposites

2012 ◽  
Vol 297 (9) ◽  
pp. 864-874
Author(s):  
Vinod K. Radhakrishnan ◽  
Virginia A. Davis ◽  
Edward W. Davis
Keyword(s):  
Process Parameters ◽  
Extrusion Process ◽  
Melt Extrusion ◽  
Poly Propylene

scholarly journals Development of Porous Polyurethane Implants Manufactured via Hot-Melt Extrusion

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2950
Author(s):  
Ioannis Koutsamanis ◽  
Martin Spoerk ◽  
Florian Arbeiter ◽  
Simone Eder ◽  
Eva Roblegg
Keyword(s):  
Material Selection ◽  
Hot Melt Extrusion ◽  
Extrusion Process ◽  
Controlled Delivery ◽  
Application Site ◽  
Melt Extrusion ◽  
Average Pore ◽  
Porous Carrier ◽  
Good Patient Compliance ◽  
Hot Melt

Implantable drug delivery systems (IDDSs) offer good patient compliance and allow the controlled delivery of drugs over prolonged times. However, their application is limited due to the scarce material selection and the limited technological possibilities to achieve extended drug release. Porous structures are an alternative strategy that can overcome these shortcomings. The present work focuses on the development of porous IDDS based on hydrophilic (HPL) and hydrophobic (HPB) polyurethanes and chemical pore formers (PFs) manufactured by hot-melt extrusion. Different PF types and concentrations were investigated to gain a sound understanding in terms of extrudate density, porosity, compressive behavior, pore morphology and liquid uptake. Based on the rheological analyses, a stable extrusion process guaranteed porosities of up to 40% using NaHCO3 as PF. The average pore diameter was between 140 and 600 µm and was indirectly proportional to the concentration of PF. The liquid uptake of HPB was determined by the open pores, while for HPL both open and closed pores influenced the uptake. In summary, through the rational selection of the polymer type, the PF type and concentration, porous carrier systems can be produced continuously via extrusion, whose properties can be adapted to the respective application site.

scholarly journals Hot-melt extrusion process impact on polymer choice of glyburide solid dispersions: The effect of wettability and dissolution

2019 ◽  
Vol 559 ◽  
pp. 245-254 ◽  
Author(s):  
Maen Alshafiee ◽  
Mohammad K. Aljammal ◽  
Daniel Markl ◽  
Adam Ward ◽  
Karl Walton ◽  
...  
Keyword(s):  
Solid Dispersions ◽  
Hot Melt Extrusion ◽  
Extrusion Process ◽  
Melt Extrusion ◽  
Hot Melt

611 Analysis Technique of Melt Extrusion Process of a Multi-Layer Film(2)

2006 ◽  
Vol 2006 (0) ◽  
pp. _611-1_-_611-4_
Author(s):  
Yuji MATSUO ◽  
Yasuya NAKAYAMA ◽  
Toshihisa KAJIWARA
Keyword(s):  
Extrusion Process ◽  
Melt Extrusion ◽  
Layer Film ◽  
Analysis Technique ◽  
Multi Layer Film
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