Abstract
In this paper, a low-cost yet effective method of irreversible bonding between two elastomeric polydimethylsiloxane (PDMS) interfaces using Piranha solution is investigated. Piranha solutions at a weight ratio of 3:1 using different acids and hydrogen peroxide were attempted. The average tensile strengths of the device bonded with concentrated sulfuric acid-based piranha solution and nitric acid-based piranha solution were found to be 200 ± 20 kPa and 100 ± 15 kPa respectively. A PDMS surface treated with Piranha Solution demonstrated an increase in hydrophilicity. In addition, relatively straightforward swelling studies of PDMS using a weight loss method with common organic solvents were also investigated. Experimental results show that hexane, toluene, ethyl acetate, n-propyl alcohol and acetone swell PDMS significantly over a duration of up to 1 h and above; PDMS samples reached a steady state of swelling only after 5 min of immersion in other solvents. This will enable researchers to develop devices for the future according to the interaction between the material and the solvents in contact.
| Original language | English |
|---|---|
| Pages (from-to) | 427-441 |
| Number of pages | 15 |
| Journal | Micromachines |
| Volume | 3 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 4 May 2012 |
| Externally published | Yes |
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Quantitative studies on PDMS-PDMS interface bonding with piranha solution and its swelling effect. / Koh, Kai Seng; Chin, Jitkai; Chia, Joanna; Chiang, Choon Lai.
In: Micromachines, Vol. 3, No. 2, 04.05.2012, p. 427-441.Research output: Contribution to journal › Article
TY - JOUR
T1 - Quantitative studies on PDMS-PDMS interface bonding with piranha solution and its swelling effect
AU - Koh, Kai Seng
AU - Chin, Jitkai
AU - Chia, Joanna
AU - Chiang, Choon Lai
PY - 2012/5/4
Y1 - 2012/5/4
N2 - In this paper, a low-cost yet effective method of irreversible bonding between two elastomeric polydimethylsiloxane (PDMS) interfaces using Piranha solution is investigated. Piranha solutions at a weight ratio of 3:1 using different acids and hydrogen peroxide were attempted. The average tensile strengths of the device bonded with concentrated sulfuric acid-based piranha solution and nitric acid-based piranha solution were found to be 200 ± 20 kPa and 100 ± 15 kPa respectively. A PDMS surface treated with Piranha Solution demonstrated an increase in hydrophilicity. In addition, relatively straightforward swelling studies of PDMS using a weight loss method with common organic solvents were also investigated. Experimental results show that hexane, toluene, ethyl acetate, n-propyl alcohol and acetone swell PDMS significantly over a duration of up to 1 h and above; PDMS samples reached a steady state of swelling only after 5 min of immersion in other solvents. This will enable researchers to develop devices for the future according to the interaction between the material and the solvents in contact.
AB - In this paper, a low-cost yet effective method of irreversible bonding between two elastomeric polydimethylsiloxane (PDMS) interfaces using Piranha solution is investigated. Piranha solutions at a weight ratio of 3:1 using different acids and hydrogen peroxide were attempted. The average tensile strengths of the device bonded with concentrated sulfuric acid-based piranha solution and nitric acid-based piranha solution were found to be 200 ± 20 kPa and 100 ± 15 kPa respectively. A PDMS surface treated with Piranha Solution demonstrated an increase in hydrophilicity. In addition, relatively straightforward swelling studies of PDMS using a weight loss method with common organic solvents were also investigated. Experimental results show that hexane, toluene, ethyl acetate, n-propyl alcohol and acetone swell PDMS significantly over a duration of up to 1 h and above; PDMS samples reached a steady state of swelling only after 5 min of immersion in other solvents. This will enable researchers to develop devices for the future according to the interaction between the material and the solvents in contact.
KW - Bonding effects
KW - Piranha solution
KW - Polydimethylsiloxane (PDMS)
KW - Swelling
UR - http://www.scopus.com/inward/record.url?scp=84874477562&partnerID=8YFLogxK
U2 - 10.3390/mi3020427
DO - 10.3390/mi3020427
M3 - Article
VL - 3
SP - 427
EP - 441
JO - Micromachines
JF - Micromachines
SN - 2072-666X
IS - 2
ER -