Moisture absorption relative humidity influence

Air moisture also has some influence on the effectiveness of extraction from the head-space in fact, at a relative humidity above 90%, absorption of analytes onto the fibre can be reduced by as much as 10% [215]. 

Since the latter possibility is only given in case of porous surfaces, dispersion adhesives are mainly used for materials that are capable of binding the water of the liquid adhesive layer by absorption . The remaining polymer particles with their inherent tack fuse to an adhesive layer (film formation). The open assembly time (Section 5.2) in the processing of dispersion adhesives is strongly influenced by the moisture content of the adherends and the relative humidity. The open assembly time increases with higher humidity. 

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