Pluronic P-123
Pluronic P-123 is the tradename for a triblock copolymer manufactured by the BASF Corporation. The nominal chemical formula is HO(CH2CH2O)20(CH2CH(CH3)O)70(CH2CH2O)20H, which corresponds to a molecular weight of around 5800 Da. Triblock copolymers based on poly(ethylene glycol)-poly(propylene glycol)-poly(ethylene glycol) are known generically as poloxamer, and similar materials are manufactured by other companies.
Poloxamers have behaviors similar to those of hydrocarbon surfactants, and will form micelles when placed in a selective solvent such as water. They are capable of forming both spherical and cylindrical micelles
Uses
P-123 has recently been used in the synthesis of mesoporous materials including FDU-14. Dissolved P-123 forms micelles that are used as the backbone to make structured mesoporous materials such as SBA-15.
"Potential Degradation by Sonication" Wang et al. reported that aqueous solutions of poloxamer 188 (Pluronic® F-68) and poloxamer 407 (Pluronic® F-127) sonicated in the presence or absence of multi-walled carbon nanotubes (MWNTs) can became highly toxic to cultured cells. Moreover, toxicity correlated with the sonolytic degradation of the polymers. Wang et al., Nanotoxicology. 2013 Nov; vol 7: pages 1272–1281, doi: 10.3109/17435390.2012.736547 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3657567/
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Ball and Chain
by: B4-4I just wanna be your ball and chain
Wrapped around your finger
Locked up, tied me down
Follow you forever
Never let you get away,
Holding on like a ball and chain
I never wanted to stay
In one place too long
Oh no, not me, I didn't wanna be
A victim of that fatal touch
When you want someone too much but
You, you'll be the end of me
And I don't want to hurt anymore
I tried my best to avoid
Making promises
Oh, no, not me, I didn't wanna
be a prisoner of that tender trap
When there's no turning back but
You, you got me on my knees
And I won't be afraid anymore
I just wanna be your ball and chain
Wrapped around your finger
Locked up, tied me down
Follow you forever
Never let you get away,
Holding on like a ball and chain
I know it's been some time confined to be alone
but I know I found the one who's gotts be this love jones
you know that I get open when you rubbing my back the goose bumps
and chills must be proof of that cos I'm feeling when your dealing
all the knowledge you've got about making it good
when your touching my spots I've goy lots of loving
when we bubbling it right I look forward to the time the day turns night
you've gotta meet me at the crib for the quarter to nine
and at the time love devine and what do I find
I won't be afraid anymore
The side of you be wanting me just haunting my fight boy be my ball and chain yo it's gotta be right
I just wanna be your ball and chain
Wrapped around your finger
Locked up, tied me down
Follow you forever
Never let you get away,