MATERIALS | TECHNOLOGY MEDICAL C-PVC


C-PVC kills germs in


IMAGE: SOLVAY


PSU delivers transparency and strength for sight gauge


TBL Performance Plastics, a manufacturer of single-use components for medical and pharmaceutical systems, has used a polysulphone (PSU) resin from Solvay to make a medical grade sight gauge. Solvay’s transparent


Udel P-1700 PSU resin offers the necessary strength, transparency, heat resistance and hydrolytic stability – as well as retention of mechanical properties under steam sterilisation – for demand- ing biopharmaceutical processing conditions.


BIOPLASTICS Bio-based profiles derived from wood


As part of the pan-European Basajaun project, Aimplas of Spain is to develop a range of bio-based profiles. The profiles will be pultruded from resins derived from forestry


products – and reinforced with natural fibres. The materials produced will be tested before manufacture of the final prototypes. Their pro- cessability will be checked, their combustion analysed, and the materials will be mechanically characterised. The 48-month project involves 30 partners from across Europe, who


are trying “to get the most added value possible from forest products as a raw material for the construction industry”. The project aims to construct full-scale demo buildings in Finland


and France that pull together the various parts of the project. � www.aimplas.net � https://basajaun-horizon.eu/


www.pipeandprofile.com April 2021 | PIPE & PROFILE EXTRUSION 39 The material was used to


extrude TBL’s Tri-Clamp sight gauges – after trials with polycarbonate had failed. One important factor was that it had gone through extensive testing. “Udel P-1700 PSU resin is a major breakthrough for the pharmaceutical indus- try,” said Robert DuPont, managing director of operations for TBL. “One key factor in choosing it is the rigorous regulatory testing done by Solvay – particularly for extractables and leachables under the BioPhorum Operations


Group (BPOG) standard.” Solvay has taken a lead position in providing this data to its customers, he added. Based on the resin’s performance – and the collaboration with Solvay – TBL is planning to expand the use of the material into novel products that are currently being developed. In addition, TBL chose an


opaque, white grade of Udel PSU to create the connection between the sight gauge and the tubing used in various critical bio-processing applications. � www.solvay.com


water pipe Chlorinated PVC (C-PVC) is the most effective pipe material for suppressing microbes in drinking water, according to a recent paper in Water Research. Dutch researchers carried out the study to determine the influence of different pipe materials on the microbial populations in water and biofilm under semi-stagnant conditions. The researchers tested


a range of pipe materials, including glass, copper, PEX and PVC. “We conclude that pipe


material is an important factor that influences biomass concentration, abundance of specific microorganisms and the bacterial community composition in distribu- tion systems with unchlo- rinated drinking water,” said the researchers. � www.kwrwater.nl


IMAGE: AIMPLAS


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46