Surface-induced polymer brushes act as anti-scale coatings for plate heat exchangers.

In a recently published study, researchers evaluated the feasibility of surface-triggered polymerization (SIP) as a thin coating technique to reduce the formation of CaCO 3 in heat transmission applications.
the degree of formation of CaCO 3 on different types of poly (low polyethyl glycol) methyl acrylates brush (POEGMA) was studied under the conditions of stagnation and flow heat exchange. Polymer brushes with high thing density reduce the surface cover of CaCO 3 and reduce the surface cover of CaCO 3 more effectively than brushes with

. In contrast, the thickness of the brush is independent of the surface coverage of CaCO 3.
PoEGMA brush performance extension
A comparison of stagnation and flow experiments shows that the anti-scale performance of POEGMA brush is caused by low adhesion to CaCO 3 deposits, although the brush itself does not prevent CaCO 3 from being nucleation. B. As a result, the SIP process was successfully scaled up to coat commercial heat exchanger plates with thicknesses and homogeneity comparable to laboratory-scale surfaces. In industrial testing, POEGMA brushes extend performance by 50 hours before full clogging begins.
the study was published in Organic Coatings Progress Volume 136, November 2019, 105196.
.