對聚合物表面進行精準的潤濕性控制在生物工程中具有重要的意義,潤濕行為可以通過改變表面化學能和表面微觀形貌來進行調(diào)控,等離子體表面改性技術(shù)在聚合物表面化學成分和形貌的調(diào)控上展現(xiàn)出明顯優(yōu)勢。本論文主要研究通過等離子體聚合方法獲得丙烯酸-八氟環(huán)丁烷共聚物涂層并研究其表面化學成分、潤濕性、涂層生長動力學及涂層的穩(wěn)定性。本論文研究了具有可控的潤濕性以及pH響應性的智能共聚物涂層(C4F8-co-AA)。通過射頻容性耦合等離子體(CCP)技術(shù)在原始和具有納米織構(gòu)的聚乙烯(PE)表面獲得具有不同親水/疏水性的丙烯酸-八氟環(huán)丁烷等離子體共聚物涂層。在原始聚乙烯表面的等離子體共聚物涂層靜態(tài)接觸角(SWCA)是119°到11°,具有納米織構(gòu)聚乙烯表面的等離子體共聚物涂層由超疏水(SWCA=163°)到超親水(SWCA=4°)狀態(tài)。由于表面納米織構(gòu)和等離子體共聚物涂層(C4F8-co-AA)羧基官能團的共同作用可產(chǎn)生對pH響應的潤濕性行為。增加等離子體共聚物涂層中的羧基官能團可以獲得具有pH響應的親水性表面,表面納米織構(gòu)對pH響應行為也起到重要影響作用。研究了脈沖等離子體的占空比和氣體流速對等離子體共聚物涂層...

【文章頁數(shù)】：121 頁

【學位級別】：博士

【文章目錄】：
Abstract
摘要
List of abbreviations
1 Introduction
    1.1 Plasma polymerization
        1.1.1 Radio frequency plasma polymerization
        1.1.2 Growth mechanisms of plasma polymerization
        1.1.3 Influence of plasma parameters
        1.1.4 RF pulsed plasma polymerization
        1.1.5 Plasma copolymerization
    1.2 Surface wettability
        1.2.1 Static and dynamic wettability
        1.2.2 Theoretical background
        1.2.3 Textured surface wettability
    1.3 Surface functionalization of plasma polymer coatings
        1.3.1 Surface processes during plasma functionalization
        1.3.2 Functionalized plasma polymer coatings
        1.3.3 Functionalized plasma copolymer coatings
    1.4 Surface wettability of functionalized polymer coatings
        1.4.1 Hydrophobic polymer coatings
        1.4.2 Hydrophilic polymer coatings
        1.4.3 Tunable and pH-responsive surface wettability
    1.5 Prominent applications of tunable wettability and pH-responsiveness
        1.5.1 Oil-water separation
        1.5.2 pH-responsive tumor targeted drug delivery
    1.6 Motivation
2 Experimental and characterization techniques
    2.1 Plasma reactor and polymer coatings
        2.1.1 Substrate selection and preparation
    2.2 Composition analysis
        2.2.1 Fourier transform infrared (FTIR) spectroscopy
        2.2.2 X-ray photoelectron spectroscopy (XPS)
    2.3 Topography characterization
        2.3.1 Field emission scanning electron microscopy (FESEM)
        2.3.2 Profilometer
    2.4 Surface wettability measurements
        2.4.1 Static water contact angle (SWCA) measurements
        2.4.2 Contact angle hysteresis (CA hysteresis) measurements
        2.4.3 pH-responsive surface wettability measurements
3 Monomer feed rate dependent surface wettability and pH-responsiveness of plasmacopolymer coatings
    3.1 Surface chemistry
    3.2 Surface wettability
    3.3 Deposition rate
    3.4 Discussion
    3.5 Summary
4 Duty cycle dependent surface wettability of plasma copolymer coatings
    4.1 Surface chemistry
    4.2 Surface wettability
    4.3 Discussion
    4.4 Summary
5 Polyethylene substrate dependent surface wettability of plasma copolymer coatings
    5.1 Kinetics of C₄F₈-co-AA polymer deposition
    5.2 Surface chemistry
    5.3 Surface wettability
    5.4 Discussion
    5.5 Summary
6 Conclusions and outlook
Abstract of Innovation Points
References
Published academic papers during PhD period
Acknowledgement
About the Author



本文編號：4013865