Solvent bonding of poly(methyl methacrylate) microfluidic chip using phase-changing agar hydrogel as a sacrificial layer

2011 ◽  
Vol 32 (23) ◽  
pp. 3319-3323 ◽  
Author(s):  
Zhibin Gan ◽  
Luyan Zhang ◽  
Gang Chen
Keyword(s):  
Methyl Methacrylate ◽  
Microfluidic Chip ◽  
Sacrificial Layer ◽  
Poly Methyl Methacrylate ◽  
Solvent Bonding

scholarly journals Pressure-Free Assembling of Poly(Methyl Methacrylate) Microdevices via Microwave-Assisted Solvent Bonding and Its Biomedical Applications

Biosensors ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 526
Author(s):  
Kieu The Loan Trinh ◽  
Woo Ri Chae ◽  
Nae Yoon Lee
Keyword(s):  
Acetic Acid ◽  
Methyl Methacrylate ◽  
Biomedical Applications ◽  
External Pressure ◽  
Microfluidic Chips ◽  
Poly Methyl Methacrylate ◽  
Bonding Performance ◽  
Passive Micromixer ◽  
Solvent Bonding ◽  
Short Time

Poly(methyl methacrylate) (PMMA) has become an appealing material for manufacturing microfluidic chips, particularly for biomedical applications, because of its transparency and biocompatibility, making the development of an appropriate bonding strategy critical. In our research, we used acetic acid as a solvent to create a pressure-free assembly of PMMA microdevices. The acetic acid applied between the PMMA slabs was activated by microwave using a household microwave oven to tightly merge the substrates without external pressure such as clamps. The bonding performance was tested and a superior bond strength of 14.95 ± 0.77 MPa was achieved when 70% acetic acid was used. Over a long period, the assembled PMMA device with microchannels did not show any leakage. PMMA microdevices were also built as a serpentine 2D passive micromixer and cell culture platform to demonstrate their applicability. The results demonstrated that the bonding scheme allows for the easy assembly of PMMAs with a low risk of clogging and is highly biocompatible. This method provides for a simple but robust assembly of PMMA microdevices in a short time without requiring expensive instruments.

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