We report the preparation of poly(styrene-co-divinylbenzene-co-2-ethylhexyl acrylate) polyHIPE composite foams through the use of silane functionalized cellulose nanocrytals (fCNCs). By varying the concentration of methacryloxypropyltrimethoxysilane (MPS) coupling agent during functionalization and the amount of fCNCs loading in the precursor emulsion it is demonstrated that fCNCs can be used for tuning of morphological and mechanical properties, as well as thermal stability. Incorporation of fCNCs demonstrated a significant influence on the emulsion stability. Moreover, variation of average cavity diameters of the composite foams prepared with the same amount of fCNCs but containing different concentrations of MPS displayed the importance of MPS concentration. In terms of mechanical features, fCNCs loading improved the compression modulus of the obtained foams. The results also showed that fCNCs prepared by using low concentration of MPS were less effective on the compression modulus. While the polyHIPE/fCNCs composite foam prepared with 1.0 wt% of fCNCs (containing 60 mM MPS) showed 33% higher compression modulus as compared to the neat polyHIPE foam, the increase in the compression modulus was much less for the composite foams prepared by using 20 mM MPS. In addition, the initial temperature of decomposition was also 51.6 °C higher than the neat polyHIPE foam.

我们报告制备聚（苯乙烯共-二乙烯基苯-丙烯酸-2-乙基己酯共聚物）通过使用硅烷官能化的纤维素纳米晶体（fCNC）来发泡复合HIPE。通过改变官能化过程中甲基丙烯酰氧基丙基三甲氧基硅烷（MPS）偶联剂的浓度和前体乳液中fCNC的负载量，证明了fCNC可用于调节形态和机械性能以及热稳定性。fCNC的加入对乳液稳定性有重大影响。而且，用相同量的fCNCs但包含不同浓度的MPS制备的复合泡沫平均腔直径的变化显示了MPS浓度的重要性。就机械特性而言，fCNC的负载量提高了所得泡沫的压缩模量。结果还表明，使用低浓度的MPS制备的fCNC对压缩模量的影响较小。尽管与纯polyHIPE泡沫相比，用1.0 wt％的fCNC（含60 mM MPS）制备的polyHIPE / fCNCs复合泡沫显示出33％的压缩模量，但通过使用20 mM MPS。另外，分解的初始温度也比纯的HIPE泡沫高51.6°C。对于使用20 mM MPS制备的复合泡沫，压缩模量的增加要小得多。另外，分解的初始温度也比纯的HIPE泡沫高51.6°C。对于使用20 mM MPS制备的复合泡沫，压缩模量的增加要小得多。另外，分解的初始温度也比纯的HIPE泡沫高51.6°C。