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. 2022 Jul 14;8(7):441. doi: 10.3390/gels8070441

Table 1.

List of the alginate-g-PNIPAAm copolymers and their molecular characteristics.

Sample 1 Mn of PNIPAAm 2 PDI of PNIPAAm 3 DSNMR 4 PNIPAAm Content (wt%)
Alg-PN31-77% 3471 1.16 19.7 77
Alg-PN44-72% 4970 1.15 10.3 72

1 The copolymers are denoted Alg-PNx-y%, where Alg and PN represent alginate and PNIPAAm, respectively, x is the degree of polymerization and y% is the weight percentage of PNIPAAm in the copolymer. 2 The Mn of PNIPAAm was measured by GPC with THF as eluent. 3 “PDI” is the polydispersity index Mw/Mn. 4 “DS” is the degree of substitution, which is the number of the grafted PNIPAAm chains per 100 saccharide units in alginate. The DS was estimated by 1H NMR.