ADDITIVES | ANTIMICROBIALS
generate resistance is a key area for future devel- opment in the medical sector,” the researchers predict.
Figure 1: Comparison of microbial effectiveness of Tolsa’s Adins Protection S10 antimicrobial in PVC after accelerated weathering (measured by % eliminated) Source: Tolsa
organic hybrid) matrices to make them more resistant to high-temperature processes,” say Morandini and Agostinis. “Chitosan is one of the most intensively re-
searched and used biopolymers for food coating and packaging and has excellent antimicrobial properties. It is the most abundant polysaccharide in the world and is also biodegradable and biocom- patible. Chitosan is becoming increasingly impor- tant as an antimicrobial additive in plastic applica- tions and its derivatives are widely used as natural alternatives to antibacterial and antioxidant agents, especially in food contact applications,” they say. “[Antimicrobial resistance] is and will be a very
important issue for hospitals and the healthcare sector. Developing new antimicrobial materials that do not allow bacteria and other microbes to
Mineral biocides Spanish mineral additives company Tolsa offers three different biocide products for thermoplastic applications under the Adins Protection name, two based on silver and one based on zinc. The com- pany’s Adins technology enables the incorporation of different active substances on natural magnesium silicate. This allows optimal distribution of the active substance in the matrix in which it is incorporated, which Tolsa claims results in high antimicrobial activity. It also improves the thermal and chemical stability of the active substance, helping to mini- mise the amount necessary for any given level of protection. Target applications include automation, plastics toys, swimming pools, external furniture, and architectural and hospital products. Tolsa recently carried out a study (in collaboration with Spanish masterbatch specialist Delta Tecnic) of antimicrobial activity in PVC formulations for swim- ming pools incorporating Adins Protection products. “Once it was verified that the resulting PVC was biocidal against two of the most common bacteria in swimming pools (
E.Coli and
P.Aureuginosa), it was decided to carry out an aging treatment in a Suntest XXL+, which simulates half (3,000h) and all (5,000h) of the material lifetime,” says Dr Marta Sacristán, Project Leader Biocides. “After this aging treatment, the antimicrobial activity versus the same bacteria re- mained practically unchanged.” See Figure 1. Adins Protection is also said to be active against all enveloped viruses, including Coronavirus types,
Zeppelin universal mixer: Simply fl exible.
WHEN THE MIXER ALWAYS HAS THE RIGHT ANSWER AT HAND.
zeppelin-systems.com
Different products require different raw materials - and each has its own characteristics. That is why we designed our universal mixer to be fl exible. For every requirement, there is the made-to-measure solution. So that raw materials are always treated optimally.
This is how you mix today! WE KNOW HOW.
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 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66
