Can someone loan me 0.15 bitcoins? thanks. My address: 1KGwch933ZqWZMXKa9rYLH9sbJvX9zZkZJ
I will pay back 0.2 bitcoins

the amount in your title (0.01BTC) is different from your post 0.15
when do you plan to pay the amount you are requesting

I can't change the title and I plan to pay it back in 1 week.

*I changed the title now*

You still don't fit the requirements to get loan.
0.15 btc is a lot of money. Do you have a collateral?

can objects be collaterals?

Yes, as long as their value is somewhat larger than the loan amount, and they can be easily liquidated if you default.