本研究以兩種比例 (60/40、80/20) 的進料ethoxylatedbisphenol-A dimethacrylate (BisEMA)及triethylene glycol dimethacrylate (TEGDMA)，使用camphorquinone(CQ)與diphenylphosphine oxide(DPPO)為光起始劑，添加不同含量的zinc oxide，並以可見光聚合固化，討論不同BisEMA/TEGDMA進料比、zinc oxide添加量及照光時間對C=C雙鍵反應轉化率的影響，與物理和化學交聯密度如何影響到膨潤交聯產物的壓縮模數和水與高分子之交互作用參數，以及乾交聯產物的動態機械性質。
　　藉由FTIR測單體的C=C雙鍵轉化率發現，來自兩種單體之aliphatics的雙鍵轉化率隨著BisEMA進料量增加和照光時間增長而上升，但隨著ZnO含量增加而下降。利用Avrami equation動力學模型，可計算出增長級數(n)與速率參數(k)，n值隨著添加ZnO含量越高而 增加，但k值趨勢則相反。高分子的含水率隨BisEMA進料量和照光時間增加而下降，是因為BisEMA為疏水性的分子和照光時間愈長而提高樹脂的交聯度，而添加不同ZnO含量之高分子，其含水率會受ZnO本身照光後變親水性之因素和ZnO造成的活性反應位置因素影響。澎潤後的壓縮模數隨BisEMA進料量和照光時間增加而上升，有效交聯密度(νe)亦隨兩者增加而提升，且網路中物理交聯的密度（Ns）皆大於網路中化學交聯的密度（Nc），表示物理性的交聯影響膨潤交聯網路的黏彈性程度較大網路中物理交聯的密度，Ns 與Nc之比值約為定值(1.47~1.64)。另外，添加適量的ZnO有助於抵銷複合樹脂中的內應力。利用交聯密度與高分子吸水率可計算得出水和高分子間交互作用參數（χ），隨著νe增加，複合樹脂的網目愈小，χ值越大，平衡含水率越低。由動態機械分析發現儲存模數(Gꞌ)與玻璃轉移溫度(Tg)皆隨照光時間增長而上升，玻璃轉移溫度隨著交聯密度增加而遞增，表示適量添加氧化鋅奈米粒子有助於樹脂在高溫下具有較好的力學性質。
　　實驗結果得知BisEMA/TEGDMA比例改變中添加氧化鋅奈米粒子或改變照光時間，均會影響高分子的網路結構、C=C雙鍵轉化率與物理及化學交聯密度，進而影響到膨潤交聯產物的力學性質和水與高分子之交互作用，及乾交聯產物的動態機械性質。

Adhesives were prepared by using ethoxylated bisphenol-A dimethacrylate (BisEMA) and triethylene glycol dimethacrylate (TEGDMA) of different weight ratios, 60/40 and 80/20, in feed, with camphorquinone (CQ) and diphenylphosphine oxide (DPPO) as the photoinitiators. We added zinc oxide nanoparticles in various contents of feed and cured BisEMA and TEGDMA with visible light and the photoinitiator. We used the different photocuring times (2~6 mins) of visible light. We examined the effects of BisEMA/TEGDMA weight ratios in feed, contents of zinc oxide nanoparticles and photocuring times on conversion of reaction, network structure, thermodynamic and mechanical properties.

According to FTIR analysis, the conversions of double bonds from aliphatics of two monomers increase as the contents of BisEMA increase or the photocuring time increases. But it decreases as the contents of zinc oxide nanoparticles increase. The order of propagation (n) and rate parameter (k) were calculated by the Avrami equation. As the contents of zinc oxide nanoparticles increase, the n values decreases but k values increases.

The equilibrium water contents of polymers decrease as the contents of BisEMA increase or the photocuring time increases. This is because BisEMA is a hydrophobic molecule and the longer the photocuring times will cause the higher the crosslinking degree of the resin. In addition, adding different ZnO nanoparticles contents in polymers, the equilibrium water contents will be affected by the hydrophilicity of ZnO nanoparticles after ZnO nanoparticles were irradiated and the active reaction position factor caused by ZnO. Both of compressive modulus and crosslinking density increase with increasing the contents of BisEMA in feed and photocuring times. The density of physical entanglement（Ns）was greater than density of physical entanglement（Ns）. It showed that physical cross-linking has more effect on the degree of viscoelasticity of the swelled network. And Ns / Nc ratios are almost constant (1.47~1.64). In addition, we observed the addition of an appropriate amount of ZnO helps to offset the internal stress in the composite resin. The interaction parameters of water and polymers in adhesives (χ) were calculated by crosslinking densities and equilibrium water contents. As crosslinking density increases, the mesh size of the composite resin was smaller. Then the χ values increases and the equilibrium water contents decrease.

According to DMA analysis, as the photocuring time increases, the storage modulus (G ꞌ) and the glass transition temperature (Tg) will increase. The glass transition temperature was increased by increasing crosslink density. It indicated that the proper addition of zinc oxide nanoparticles helps the resin to have better mechanical properties at high temperatures.

Experimental results showed that when we varied BisEMA/TEGDMA ratios in feed, contents of zinc oxide nanoparticles and photocuring times, that will influence the conversions of double bonds from aliphatics of two monomers, network structure of polymer and crosslink density. And there by affecting the compressive modulus and interactions between water and polymers in swollen resins, as well as affecting glass transition temperature, storage modulus and loss modulus of dry resins.

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