## 3 Results and Discussion
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multirow{2}{*}{**Sample ID**} & \multirow{2}{*}{**Gel Fraction**} & \multirow{2}{*}{**PDMS**} & \multirow{2}{*}{**(Equation)**} & \multirow{2}{*}{**(Equation)**} & \multirow{2}{*}{**\(T_{\mathrm{g}}\)**} \\  & & & **(wt\%)** & & **(2)** & **(3)** \\  & & & & **(g/mol)** & **(g/mol)** \\ \hline S-4.7-48 & 55.9 & 48.4 & 2510 & - & 83 \\ S-4.7-59 & 60.4 & 59.3 & 1610 & - & 69 \\ S-4.7-67 & 60.2 & 67.4 & 1140 & - & 62 \\ S-4.7-76 & 63.0 & 76.4 & 730 & - & n.d. \\ S-4.7-84 & 53.2 & 84.1 & 440 & - & n.d. \\ \hline S-22.2-51 & 41.3 & 51.4 & 10500 & - & 96 \\ S-22.2-57 & 59.6 & 57.2 & 8310 & - & 90 \\ S-22.2-68 & 54.1 & 67.9 & 5250 & - & 88 \\ S-22.2-79 & 61.1 & 78.9 & 2970 & - & 81 \\ S-22.2-89 & 59.6 & 89.0 & 1370 & - & n.d. \\ \hline SD36-4.7-33 & 88.1 & 33.4 & 4690 & 1550 & 90 \\ SD36-4.7-44 & 86.3 & 44.3 & 2960 & 1290 & 79 \\ SD36-4.7-55 & 86.7 & 55.4 & 1890 & 1030 & 72 \\ SD36-4.7-65 & 87.1 & 65.2 & 1250 & 800 & 59 \\ SD36-4.7-75 & 86.8 & 75.4 & 770 & 570 & n.d. \\ \hline SD36-9-65 & 94.6 & 65.3 & 2390 & 1170 & 70 \\ \hline SD36-22.2-66 & 91.1 & 65.6 & 5820 & 1660 & 83 \\ \hline n.d.: not detectable. & & & & & \\ \end{tabular}
\end{table} 
Table 1: The gel fraction, composition (PDMS content), the average molecular weight between crosslinks (\(M_{\mathrm{c}}\)), and the glass transition temperature (\(T_{\mathrm{g}}\)) of the PSt component of PSt-\(l\)-PDMS and PSt-\(l\)-PDMS/DVB conetworks. Figure 1: The DSC curves in the temperature range of the glass transition, crystallization, and melting of PDMS for the PDMS homopolymers, the PSt-\(l\)-PDMS (**A**), and PSt-\(l\)-PDMS/DVB (**B**) conetworks. As the data indicate in Figure 2 and Table 1, the \(T_{\rm g}\) of PSt in the conetworks decreases with increasing PDMS macrocrosslinker content, that is, with increasing crosslinking density. This is in sharp contrast to expectations. As evidenced by the experimental data, the glass transition temperature increases with the increasing amount of the crosslinker in cases of polymer networks with low molecular weight crosslinkers [75; 76; 77]. Inspired by previous similar findings with conetworks, which led to the discovery of the scissors effect [12; 13], the \(M_{\rm c}\), i.e., the average molecular weight between crosslinking points, was determined in order to carry out a correlation analysis between the observed \(T_{\rm g}\) and \(M_{\rm c}\) values of the PSt-\(l\)-PDMS and PSt-\(l\)-PDMS/DVB conetworks. The \(M_{\rm c}\) for the PSt-\(l\)-PDMS conetworks can be obtained by the following relationship:  
\[M_{\rm c}=\frac{W_{\rm St}\cdot M_{\rm n,PDMS}}{2\cdot W_{\rm PDMS}} \tag{2}\]  
where \(W_{\rm St}\) and \(W_{\rm PDMS}\) denote the weight fractions of PSt and PDMS, respectively, and \(M_{\rm n,PDMS}\) stands for the number average molecular weight of the PDMS macrocrosslinker. In the case of the PSt-\(l\)-PDMS/DVB conetworks, by taking into account the additional DVB crosslinker as well, the \(M_{\rm c}\) can be obtained by the following formula:  
\[M_{\rm c}=\frac{W_{\rm St}}{2\cdot\left(\frac{W_{\rm PDMS}}{M_{\rm n,PDMS}}+ \frac{W_{\rm DVB}}{M_{\rm DVB}}\right)}, \tag{3}\]  
Figure 2: The DSC curves and glass transition temperatures of the polystyrene component in the PSt-\(l\)-PDMS(4.7k) (**A**), PSt-\(l\)-PDMS(4.7 k)/DVB (**B**), PSt-\(l\)-PDMS(22.2 k) (**C**), and PSt-\(l\)-PDMS(9 k\(\&\)22.2 k)/DVB (**D**) conetworks from 0 \({}^{\circ}\)C to 200 \({}^{\circ}\)C (the dotted lines are only for guiding the eyes). where \(W_{\rm DVB}\) and \(M_{\rm DVB}\) denote the weight fraction and molecular weight of DVB, respectively.