## 4 Conclusions  
In order to explore the relationship between the \(T_{\rm g}\) and \(M_{\rm c}\) in PSt-\(l\)-PDMS and PSt-\(l\)-PDMS/DVB networks, a library of these conetworks, consisting of two immiscible, covalently bonded polymers, i.e., PSt and PDMS, was prepared with a wide composition range of 30-80 wt% PDMS content. For the synthesis, MA-PDMS-MA was used as a macrocrosslinker with varying \(M_{\rm n,PDMS}\) of 4.7, 9, and 22.2 kDa. In the presence of DVB, the St/DVB weight ratio was 36:1 when DVB was present as an additional low molecular weight crosslinker. The results of DSC measurements revealed two separate glass transition temperatures, that is, one for the PDMS component in the range of the PDMS homopolymers at around \(-120\)\({}^{\circ}\)C, and another for PSt in the range of 60\(-\)100 \({}^{\circ}\)C. This indicates strong segregation of PSt and PDMS in these conetworks, in agreement with previously published SAXS and AFM results on the nanophase-separated morphology of these conetworks [73]. The DSC thermograms show that the crystallization of the PDMS macrocrosslinkers with \(M_{\rm n,PDMS}\) of 4.7 and 9 kDa is completely suppressed in the conetworks. This is due to the nanoconfinement of the PDMS nanodomains, which prevents nucleation for crystallization in such conetworks. In the case of conetworks with PDMS having higher \(M_{\rm n,PDMS}\) (22.2 kDa), i.e., with longer chains, depleted cold crystallization and melting peaks appear in the DSC scans. Surprisingly, the \(T_{\rm g}\)s of the PSt component in both the PSt-\(l\)-PDMS and PSt-\(l\)-PDMS/DVB networks were found to decrease with decreasing \(M_{\rm c}\)--that is, with increasing the PDMS content. Considering the well-known increase in \(T_{\rm g}\) with decreasing \(M_{\rm c}\) in the cases of conventional polymer networks crosslinked with low molecular weight crosslinkers [75; 76; 77], correlation analysis was carried out for the unusual \(M_{\rm c}\) dependence of \(T_{\rm g}\) of the crosslinked PSt in the conetworks. It was found that the \(T_{\rm g}\) as a function of \(M_{\rm c}\) follows the Fox-Flory relationship [74], which is obtained for the dependence of \(T_{\rm g}\) on \(M_{\rm n,PSt}\) for homopolymers. This unexpected finding indicates that the MA-PDMS-MA macrocrosslinker behaves like scissors in these conetworks in relation to the glass transition of the crosslinked PSt chains, leading to \(T_{\rm g}\)s which matches that of the PSt homopolymers with the same \(M_{\rm n,PSt}\) as \(M_{\rm c}\). In other words, the \(T_{\rm g}\) of the PSt component is determined by the scissors effect of the PDMS macrocrosslinkers in these conetworks. On the basis of a literature result, according to which the mobility of the molecular segment of the crosslinking point is similar to that of the macrocrosslinker in the PDMAEMA-\(l\)-PIB context [92], it can be concluded that the scissors effect is due to this difference in mobility at and/or most likely in the close vicinity of the crosslinking structural units. Taking into account the findings in this study and similar previous observations with other conetworks [12; 13], it can be claimed that the scissors effect can be regarded as a general phenomenon for conetworks prepared by using macromolecular crosslinkers for conetwork formation. The existence of the scissors effect enables designing and applying polymer conetworks with predetermined \(T_{\rm g}\)s for the crosslinked polymer components in such macromolecular assemblies by selecting the proper \(M_{\rm c}\) via either composition or by the \(M_{\rm n}\) of the applied macromolecular crosslinker. Conceptualization, A.P., I.S., and B.I. ; methodology, A.P., I.S., L.B., N.H., J.M., and B.I. ; investigation, A.P., I.S., L.B., N.H., J.M., and B.I. ; data curation, A.P., I.S., L.B., N.H., J.M., and B.I. ; writing--original draft preparation, A.P., I.S., and B.I. ; writing--review and editing, A.P., I.S., L.B., N.H., J.M., and B.I. ; visualization, A.P., L.B., N.H., J.M., and B.I. ; supervision, B.I. ; funding acquisition, B.I.