Hygroscopic kinetic parameters of untreated and irradiated TPS by different UV wavelengths.

Relative humidity	Sample	C 1	M ∞	t 0	C 2	D	K
57%	TPS	−4.2727	6.0051	2.7744	8.1584	0.01010	0.3406
	254 nm	−1.9091	5.5858	6.8416	6.2610	0.00767	0.2760
	308 nm	−1.2418	5.2170	7.8252	5.2754	0.00748	0.2547
	365 nm	−2.7601	5.6972	4.3063	5.88426	0.00895	0.3042
75%	TPS	−1.7215	14.7007	9.5903	4.2910	0.00687	0.6874
	254 nm	−1.1759	13.6529	9.6644	3.8337	0.00699	0.6440
	308 nm	−1.0712	13.4050	9.6768	3.8034	0.00708	0.6367
	365 nm	−1.3716	14.1950	9.7675	4.0496	0.00669	0.6550
84%	TPS	−9.3430	26.8056	8.8081	8.0803	0.00459	1.0244
	254 nm	−5.4452	24.4594	10.4316	6.5938	0.00452	0.9278
	308 nm	−4.8750	23.7291	10.6908	6.4481	0.00439	0.8871
	365 nm	−6.0677	25.1149	10.0840	6.7737	0.00461	0.9627
98%	TPS	−11.9571	43.9561	10.7428	8.0795	0.00384	1.5366
	254 nm	−6.5866	38.3669	11.8466	6.3510	0.00417	1.3986
	308 nm	−5.0267	34.9065	11.5166	5.6118	0.00483	1.3691
	365 nm	−7.1449	39.0313	11.2606	6.3808	0.00454	1.4840